int db__driver_describe_table(dbString * table_name, dbTable ** table)
{
dbString sql;
PGresult *res;
db_init_string(&sql);
db_set_string(&sql, "select * from ");
db_append_string(&sql, db_get_string(table_name));
db_append_string(&sql, " where 1 = 0");
res = PQexec(pg_conn, db_get_string(&sql));
if (!res || PQresultStatus(res) != PGRES_TUPLES_OK) {
append_error(db_get_string(&sql));
append_error("\n");
append_error(PQerrorMessage(pg_conn));
report_error();
PQclear(res);
return DB_FAILED;
}
if (describe_table(res, table, NULL) == DB_FAILED) {
append_error("Cannot describe table\n");
report_error();
PQclear(res);
return DB_FAILED;
}
PQclear(res);
return DB_OK;
}
static int get_stmt(FILE * fd, dbString * stmt)
{
char buf[4000], buf2[4000];
int len, row = 0;
db_init_string(stmt);
while (fgets(buf, 4000, fd) != NULL) {
strcpy(buf2, buf);
G_chop(buf2);
len = strlen(buf2);
if (buf2[len - 1] == ';') { /* end of statement */
buf2[len - 1] = 0; /* truncate ';' */
/* append truncated */
db_append_string(stmt, buf2);
return 1;
}
else {
/* append not truncated string (\n may be part of value) */
db_append_string(stmt, buf);
}
row++;
}
if (row > 0)
return 1;
return 0;
}
/* insert values into the table (cat, val | dval) */
void insert_value(int cat, int val, double dval)
{
char buf[1000];
sprintf(buf, "insert into %s values (%d", Fi->table, cat);
db_set_string(&sql, buf);
if (data_type == CELL_TYPE)
sprintf(buf, ", %d", val);
else
sprintf(buf, ", %f", dval);
db_append_string(&sql, buf);
if (has_cats) {
char *lab;
lab = Rast_get_c_cat(&val, &RastCats); /*cats are loaded only for CELL type */
db_set_string(&label, lab);
db_double_quote_string(&label);
sprintf(buf, ", '%s'", db_get_string(&label));
db_append_string(&sql, buf);
}
db_append_string(&sql, ")");
G_debug(3, db_get_string(&sql));
if (db_execute_immediate(driver, &sql) != DB_OK)
G_fatal_error(_("Cannot insert new row: %s"), db_get_string(&sql));
}
/*------------------------------------------------------------------------------------------------*/
int P_Drop_Aux_Table(dbDriver * driver, char *tab_name)
{
dbString drop;
db_init_string(&drop);
db_append_string(&drop, "drop table ");
db_append_string(&drop, tab_name);
return db_execute_immediate(driver, &drop);
}
static void create_table(struct Map_info *flowline_vec,
struct field_info **f_info, dbDriver ** driver,
int write_scalar, int use_sampled_map)
{
dbString sql;
char buf[200];
dbDriver *drvr;
struct field_info *fi;
db_init_string(&sql);
fi = Vect_default_field_info(flowline_vec, 1, NULL, GV_1TABLE);
*f_info = fi;
Vect_map_add_dblink(flowline_vec, 1, NULL, fi->table, GV_KEY_COLUMN,
fi->database, fi->driver);
drvr = db_start_driver_open_database(fi->driver,
Vect_subst_var(fi->database,
flowline_vec));
if (drvr == NULL) {
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
Vect_subst_var(fi->database, flowline_vec), fi->driver);
}
db_set_error_handler_driver(drvr);
*driver = drvr;
sprintf(buf, "create table %s (cat integer, velocity double precision",
fi->table);
db_set_string(&sql, buf);
if (write_scalar)
db_append_string(&sql, ", input double precision");
if (use_sampled_map)
db_append_string(&sql, ", sampled double precision");
db_append_string(&sql, ")");
db_begin_transaction(drvr);
/* Create table */
if (db_execute_immediate(drvr, &sql) != DB_OK) {
G_fatal_error(_("Unable to create table: %s"), db_get_string(&sql));
}
if (db_create_index2(drvr, fi->table, fi->key) != DB_OK)
G_warning(_("Unable to create index for table <%s>, key <%s>"),
fi->table, fi->key);
/* Grant */
if (db_grant_on_table
(drvr, fi->table, DB_PRIV_SELECT, DB_GROUP | DB_PUBLIC) != DB_OK) {
G_fatal_error(_("Unable to grant privileges on table <%s>"),
fi->table);
}
}
void write_point(struct Map_info *Out, double x, double y, double z,
int line_cat, double along, int table)
{
char buf[2000];
G_debug(3, "write_point()");
Vect_reset_line(PPoints);
Vect_reset_cats(PCats);
/* Write point */
Vect_append_point(PPoints, x, y, z);
Vect_cat_set(PCats, 1, line_cat);
Vect_cat_set(PCats, 2, point_cat);
Vect_write_line(Out, GV_POINT, PPoints, PCats);
/* Attributes */
if (!table) {
db_zero_string(&stmt);
sprintf(buf, "insert into %s values ( %d, %d, %.15g )", Fi->table,
point_cat, line_cat, along);
db_append_string(&stmt, buf);
if (db_execute_immediate(driver, &stmt) != DB_OK) {
G_warning(_("Unable to insert new record: '%s'"),
db_get_string(&stmt));
}
}
point_cat++;
}
void append_double(dbString * string, double d)
{
char buf[50];
sprintf(buf, ",%f", d);
db_append_string(string, buf);
}
/*!
\brief Delete table
\param drvname driver name
\param dbname database name
\param tblname table name
\return DB_OK on success
\return DB_FAILED on failure
*/
int db_delete_table(const char *drvname, const char *dbname, const char *tblname)
{
dbDriver *driver;
dbString sql;
G_debug(3, "db_delete_table(): driver = %s, db = %s, table = %s\n",
drvname, dbname, tblname);
/* Open driver and database */
driver = db_start_driver_open_database(drvname, dbname);
if (driver == NULL) {
G_warning(_("Unable open database <%s> by driver <%s>"), dbname,
drvname);
return DB_FAILED;
}
/* Delete table */
/* TODO test if the tables exist */
db_init_string(&sql);
db_set_string(&sql, "drop table ");
db_append_string(&sql, tblname);
G_debug(3, "%s", db_get_string(&sql));
if (db_execute_immediate(driver, &sql) != DB_OK) {
G_warning(_("Unable to drop table: '%s'"),
db_get_string(&sql));
db_close_database_shutdown_driver(driver);
return DB_FAILED;
}
db_close_database_shutdown_driver(driver);
return DB_OK;
}
int Insert_Interpolation(double Interp, int line_num, dbDriver * driver,
char *tab_name)
{
char buf[1024];
dbString sql;
int ret;
db_init_string(&sql);
sprintf(buf, "INSERT INTO %s (ID, Interp)", tab_name);
db_append_string(&sql, buf);
sprintf(buf, " VALUES (%d, %lf)", line_num, Interp);
db_append_string(&sql, buf);
ret = db_execute_immediate(driver, &sql);
db_free_string(&sql);
return ret;
}
bool OGRGRASSLayer::OpenSequentialCursor()
{
CPLDebug ( "GRASS", "OpenSequentialCursor: %s", pszQuery );
if ( !poDriver )
{
CPLError( CE_Failure, CPLE_AppDefined, "Driver not opened.");
return false;
}
if ( bCursorOpened )
{
db_close_cursor ( poCursor );
bCursorOpened = false;
}
char buf[2000];
sprintf ( buf, "SELECT * FROM %s ", poLink->table );
db_set_string ( poDbString, buf);
if ( pszQuery ) {
sprintf ( buf, "WHERE %s ", pszQuery );
db_append_string ( poDbString, buf);
}
sprintf ( buf, "ORDER BY %s", poLink->key);
db_append_string ( poDbString, buf);
CPLDebug ( "GRASS", "Query: %s", db_get_string(poDbString) );
if ( db_open_select_cursor ( poDriver, poDbString,
poCursor, DB_SCROLL) == DB_OK )
{
iCurrentCat = -1;
bCursorOpened = true;
CPLDebug ( "GRASS", "num rows = %d", db_get_num_rows ( poCursor ) );
}
else
{
CPLError( CE_Failure, CPLE_AppDefined, "Cannot open cursor.");
return false;
}
return true;
}
int db__driver_describe_table(dbString * table_name, dbTable ** table)
{
dbString sql;
MYSQL_RES *res;
db_init_string(&sql);
db_set_string(&sql, "select * from ");
db_append_string(&sql, db_get_string(table_name));
db_append_string(&sql, " where 1 = 0");
if (mysql_query(connection, db_get_string(&sql)) != 0) {
append_error(db_get_string(&sql));
append_error("\n");
append_error(mysql_error(connection));
report_error();
return DB_FAILED;
}
res = mysql_store_result(connection);
if (res == NULL) {
append_error(db_get_string(&sql));
append_error("\n");
append_error(mysql_error(connection));
report_error();
return DB_FAILED;
}
if (describe_table(res, table, NULL) == DB_FAILED) {
append_error("Cannot describe table\n");
report_error();
mysql_free_result(res);
return DB_FAILED;
}
mysql_free_result(res);
db_set_table_name(*table, db_get_string(table_name));
return DB_OK;
}
int Select(double *PartialX, double *PartialY, double *Interp,
int line_num, dbDriver * driver, char *tab_name)
{
int more;
char buf[1024];
dbString sql;
dbTable *table;
dbCursor cursor;
dbColumn *PartialX_col, *PartialY_col, *Interp_col;
dbValue *PartialX_value, *PartialY_value, *Interp_value;
db_init_string(&sql);
sprintf(buf,
"SELECT ID, Interp, X, Y FROM %s WHERE ID=%d",
tab_name, line_num);
db_append_string(&sql, buf);
if (db_open_select_cursor(driver, &sql, &cursor, DB_SEQUENTIAL) != DB_OK)
return -1;
table = db_get_cursor_table(&cursor);
while (db_fetch(&cursor, DB_NEXT, &more) == DB_OK && more) {
Interp_col = db_get_table_column(table, 1);
PartialX_col = db_get_table_column(table, 2);
PartialY_col = db_get_table_column(table, 3);
if (db_sqltype_to_Ctype(db_get_column_sqltype(Interp_col)) ==
DB_C_TYPE_DOUBLE)
Interp_value = db_get_column_value(Interp_col);
else
continue;
if (db_sqltype_to_Ctype(db_get_column_sqltype(PartialX_col)) ==
DB_C_TYPE_DOUBLE)
PartialX_value = db_get_column_value(PartialX_col);
else
continue;
if (db_sqltype_to_Ctype(db_get_column_sqltype(PartialY_col)) ==
DB_C_TYPE_DOUBLE)
PartialY_value = db_get_column_value(PartialY_col);
else
continue;
*Interp += db_get_value_double(Interp_value);
*PartialX += db_get_value_double(PartialX_value);
*PartialY += db_get_value_double(PartialY_value);
}
db_close_cursor(&cursor);
db_free_string(&sql);
return DB_OK;
}
int point_save(double xmm, double ymm, double zmm, double err)
/*
c saves point deviations
c
*/
{
int cat;
Vect_reset_line(Pnts);
Vect_reset_cats(Cats);
Vect_append_point(Pnts, xmm, ymm, zmm);
cat = count;
Vect_cat_set(Cats, 1, cat);
Vect_write_line(&Map, GV_POINT, Pnts, Cats);
db_zero_string(&sql);
sprintf(buf, "insert into %s values ( %d ", f->table, cat);
db_append_string(&sql, buf);
sprintf(buf, ", %f", err);
db_append_string(&sql, buf);
db_append_string(&sql, ")");
G_debug(3, "%s", db_get_string(&sql));
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database(driver);
db_shutdown_driver(driver);
G_fatal_error(_("Cannot insert new row: %s"), db_get_string(&sql));
}
count++;
return 1;
}
/*!
\brief Select one (first) value from table/column for key/id
\param driver DB driver
\param tab table name
\param key key column name
\param id identifier in key column
\param col name of column to select the value from
\param[out] val dbValue to store within
\return number of selected values
\return -1 on error
*/
int db_select_value(dbDriver * driver, const char *tab, const char *key,
int id, const char *col, dbValue * val)
{
int more, count;
char buf[1024];
dbString stmt;
dbCursor cursor;
dbColumn *column;
dbValue *value;
dbTable *table;
if (key == NULL || strlen(key) == 0) {
G_warning(_("Missing key column name"));
return -1;
}
if (col == NULL || strlen(col) == 0) {
G_warning(_("Missing column name"));
return -1;
}
G_zero(val, sizeof(dbValue));
sprintf(buf, "SELECT %s FROM %s WHERE %s = %d\n", col, tab, key, id);
db_init_string(&stmt);
db_append_string(&stmt, buf);
if (db_open_select_cursor(driver, &stmt, &cursor, DB_SEQUENTIAL) != DB_OK)
return (-1);
table = db_get_cursor_table(&cursor);
column = db_get_table_column(table, 0); /* first column */
value = db_get_column_value(column);
/* fetch the data */
count = 0;
while (1) {
if (db_fetch(&cursor, DB_NEXT, &more) != DB_OK)
return (-1);
if (!more)
break;
if (count == 0)
db_copy_value(val, value);
count++;
}
db_close_cursor(&cursor);
db_free_string(&stmt);
return (count);
}
int UpDate(double partialX, double partialY, double Interp,
int line_num, dbDriver * driver, char *tab_name)
{
char buf[1024];
dbString sql;
int ret;
db_init_string(&sql);
sprintf(buf,
"UPDATE %s SET Interp=%lf, X=%lf, Y=%lf WHERE ID=%d",
tab_name, Interp, partialX, partialY, line_num);
db_append_string(&sql, buf);
ret = db_execute_immediate(driver, &sql);
db_free_string(&sql);
return ret;
}
/*!
\brief Append error message
\param fmt formatted string
*/
void append_error(const char *fmt, ...)
{
FILE *fp = NULL;
char *work = NULL;
int count = 0;
va_list ap;
va_start(ap, fmt);
if ((fp = tmpfile())) {
count = vfprintf(fp, fmt, ap);
if (count >= 0 && (work = G_calloc(count + 1, 1))) {
rewind(fp);
fread(work, 1, count, fp);
db_append_string(errMsg, work);
G_free(work);
}
fclose(fp);
}
va_end(ap);
}
void process_node(int node, int cat)
{
char buf[2000];
sprintf(buf, "INSERT INTO %s VALUES(%d", Fi->table, cat);
db_set_string(&sql, buf);
if (deg_opt->answer)
append_double(&sql, deg[node]);
if (close_opt->answer)
append_double(&sql, closeness[node]);
if (betw_opt->answer)
append_double(&sql, betw[node]);
if (eigen_opt->answer)
append_double(&sql, eigen[node]);
db_append_string(&sql, ")");
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database_shutdown_driver(driver);
G_fatal_error(_("Cannot insert new record: %s"), db_get_string(&sql));
}
}
int main(int argc, char *argv[])
{
int i, j, nlines, type, field, cat;
int fd;
/* struct Categories RCats; *//* TODO */
struct Cell_head window;
RASTER_MAP_TYPE out_type;
CELL *cell;
DCELL *dcell;
double drow, dcol;
char buf[2000];
struct Option *vect_opt, *rast_opt, *field_opt, *col_opt, *where_opt;
int Cache_size;
struct order *cache;
int cur_row;
struct GModule *module;
struct Map_info Map;
struct line_pnts *Points;
struct line_cats *Cats;
int point;
int point_cnt; /* number of points in cache */
int outside_cnt; /* points outside region */
int nocat_cnt; /* points inside region but without category */
int dupl_cnt; /* duplicate categories */
struct bound_box box;
int *catexst, *cex;
struct field_info *Fi;
dbString stmt;
dbDriver *driver;
int select, norec_cnt, update_cnt, upderr_cnt, col_type;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("raster"));
G_add_keyword(_("position"));
G_add_keyword(_("querying"));
G_add_keyword(_("attribute table"));
module->description =
_("Uploads raster values at positions of vector points to the table.");
vect_opt = G_define_standard_option(G_OPT_V_INPUT);
vect_opt->key = "vector";
vect_opt->description =
_("Name of input vector points map for which to edit attribute table");
rast_opt = G_define_standard_option(G_OPT_R_INPUT);
rast_opt->key = "raster";
rast_opt->description = _("Name of existing raster map to be queried");
field_opt = G_define_standard_option(G_OPT_V_FIELD);
col_opt = G_define_option();
col_opt->key = "column";
col_opt->type = TYPE_STRING;
col_opt->required = YES;
col_opt->description =
_("Column name (will be updated by raster values)");
where_opt = G_define_standard_option(G_OPT_DB_WHERE);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
field = atoi(field_opt->answer);
db_init_string(&stmt);
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
G_get_window(&window);
Vect_region_box(&window, &box); /* T and B set to +/- PORT_DOUBLE_MAX */
/* Open vector */
Vect_set_open_level(2);
Vect_open_old(&Map, vect_opt->answer, "");
Fi = Vect_get_field(&Map, field);
if (Fi == NULL)
G_fatal_error(_("Database connection not defined for layer %d"),
field);
/* Open driver */
driver = db_start_driver_open_database(Fi->driver, Fi->database);
if (driver == NULL) {
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
Fi->database, Fi->driver);
}
/* Open raster */
fd = Rast_open_old(rast_opt->answer, "");
out_type = Rast_get_map_type(fd);
/* TODO: Later possibly category labels */
/*
if ( Rast_read_cats (name, "", &RCats) < 0 )
G_fatal_error ( "Cannot read category file");
*/
/* Check column type */
col_type = db_column_Ctype(driver, Fi->table, col_opt->answer);
if (col_type == -1)
G_fatal_error(_("Column <%s> not found"), col_opt->answer);
if (col_type != DB_C_TYPE_INT && col_type != DB_C_TYPE_DOUBLE)
G_fatal_error(_("Column type not supported"));
if (out_type == CELL_TYPE && col_type == DB_C_TYPE_DOUBLE)
G_warning(_("Raster type is integer and column type is float"));
if (out_type != CELL_TYPE && col_type == DB_C_TYPE_INT)
G_warning(_("Raster type is float and column type is integer, some data lost!!"));
/* Read vector points to cache */
Cache_size = Vect_get_num_primitives(&Map, GV_POINT);
/* Note: Some space may be wasted (outside region or no category) */
cache = (struct order *)G_calloc(Cache_size, sizeof(struct order));
point_cnt = outside_cnt = nocat_cnt = 0;
nlines = Vect_get_num_lines(&Map);
G_debug(1, "Reading %d vector features fom map", nlines);
for (i = 1; i <= nlines; i++) {
type = Vect_read_line(&Map, Points, Cats, i);
G_debug(4, "line = %d type = %d", i, type);
/* check type */
if (!(type & GV_POINT))
continue; /* Points only */
/* check region */
if (!Vect_point_in_box(Points->x[0], Points->y[0], 0.0, &box)) {
outside_cnt++;
continue;
}
Vect_cat_get(Cats, field, &cat);
if (cat < 0) { /* no category of given field */
nocat_cnt++;
continue;
}
G_debug(4, " cat = %d", cat);
/* Add point to cache */
drow = Rast_northing_to_row(Points->y[0], &window);
dcol = Rast_easting_to_col(Points->x[0], &window);
/* a special case.
* if north falls at southern edge, or east falls on eastern edge,
* the point will appear outside the window.
* So, for these edges, bring the point inside the window
*/
if (drow == window.rows)
drow--;
if (dcol == window.cols)
dcol--;
cache[point_cnt].row = (int)drow;
cache[point_cnt].col = (int)dcol;
cache[point_cnt].cat = cat;
cache[point_cnt].count = 1;
point_cnt++;
}
Vect_set_db_updated(&Map);
Vect_hist_command(&Map);
Vect_close(&Map);
G_debug(1, "Read %d vector points", point_cnt);
/* Cache may contain duplicate categories, sort by cat, find and remove duplicates
* and recalc count and decrease point_cnt */
qsort(cache, point_cnt, sizeof(struct order), by_cat);
G_debug(1, "Points are sorted, starting duplicate removal loop");
for (i = 0, j = 1; j < point_cnt; j++)
if (cache[i].cat != cache[j].cat)
cache[++i] = cache[j];
else
cache[i].count++;
point_cnt = i + 1;
G_debug(1, "%d vector points left after removal of duplicates",
point_cnt);
/* Report number of points not used */
if (outside_cnt)
G_warning(_("%d points outside current region were skipped"),
outside_cnt);
if (nocat_cnt)
G_warning(_("%d points without category were skipped"), nocat_cnt);
/* Sort cache by current region row */
qsort(cache, point_cnt, sizeof(struct order), by_row);
/* Allocate space for raster row */
if (out_type == CELL_TYPE)
cell = Rast_allocate_c_buf();
else
dcell = Rast_allocate_d_buf();
/* Extract raster values from file and store in cache */
G_debug(1, "Extracting raster values");
cur_row = -1;
for (point = 0; point < point_cnt; point++) {
if (cache[point].count > 1)
continue; /* duplicate cats */
if (cur_row != cache[point].row) {
if (out_type == CELL_TYPE)
Rast_get_c_row(fd, cell, cache[point].row);
else
Rast_get_d_row(fd, dcell, cache[point].row);
}
cur_row = cache[point].row;
if (out_type == CELL_TYPE) {
cache[point].value = cell[cache[point].col];
}
else {
cache[point].dvalue = dcell[cache[point].col];
}
} /* point loop */
/* Update table from cache */
G_debug(1, "Updating db table");
/* select existing categories to array (array is sorted) */
select = db_select_int(driver, Fi->table, Fi->key, NULL, &catexst);
db_begin_transaction(driver);
norec_cnt = update_cnt = upderr_cnt = dupl_cnt = 0;
for (point = 0; point < point_cnt; point++) {
if (cache[point].count > 1) {
G_warning(_("More points (%d) of category %d, value set to 'NULL'"),
cache[point].count, cache[point].cat);
dupl_cnt++;
}
/* category exist in DB ? */
cex =
(int *)bsearch((void *)&(cache[point].cat), catexst, select,
sizeof(int), srch_cat);
if (cex == NULL) { /* cat does not exist in DB */
norec_cnt++;
G_warning(_("No record for category %d in table <%s>"),
cache[point].cat, Fi->table);
continue;
}
sprintf(buf, "update %s set %s = ", Fi->table, col_opt->answer);
db_set_string(&stmt, buf);
if (out_type == CELL_TYPE) {
if (cache[point].count > 1 ||
Rast_is_c_null_value(&cache[point].value)) {
sprintf(buf, "NULL");
}
else {
sprintf(buf, "%d ", cache[point].value);
}
}
else { /* FCELL or DCELL */
if (cache[point].count > 1 ||
Rast_is_d_null_value(&cache[point].dvalue)) {
sprintf(buf, "NULL");
}
else {
sprintf(buf, "%.10f", cache[point].dvalue);
}
}
db_append_string(&stmt, buf);
sprintf(buf, " where %s = %d", Fi->key, cache[point].cat);
db_append_string(&stmt, buf);
/* user provides where condition: */
if (where_opt->answer) {
sprintf(buf, " AND %s", where_opt->answer);
db_append_string(&stmt, buf);
}
G_debug(3, db_get_string(&stmt));
/* Update table */
if (db_execute_immediate(driver, &stmt) == DB_OK) {
update_cnt++;
}
else {
upderr_cnt++;
}
}
G_debug(1, "Committing DB transaction");
db_commit_transaction(driver);
G_free(catexst);
db_close_database_shutdown_driver(driver);
db_free_string(&stmt);
/* Report */
G_message(_("%d categories loaded from table"), select);
G_message(_("%d categories loaded from vector"), point_cnt);
G_message(_("%d categories from vector missing in table"), norec_cnt);
G_message(_("%d duplicate categories in vector"), dupl_cnt);
if (!where_opt->answer)
G_message(_("%d records updated"), update_cnt);
G_message(_("%d update errors"), upderr_cnt);
exit(EXIT_SUCCESS);
}
void append_string(dbString * string, char *s)
{
db_append_string(string, ", ");
db_append_string(string, s);
db_append_string(string, " double precision");
}
int area_area(struct Map_info *In, int *field, struct Map_info *Tmp,
struct Map_info *Out, struct field_info *Fi,
dbDriver * driver, int operator, int *ofield,
ATTRIBUTES * attr, struct ilist *BList, double snap)
{
int ret, input, line, nlines, area, nareas;
int in_area, in_centr, out_cat;
struct line_pnts *Points;
struct line_cats *Cats;
CENTR *Centr;
char buf[1000];
dbString stmt;
int nmodif;
int verbose;
verbose = G_verbose();
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
/* optional snap */
if (snap > 0) {
int i, j, snapped_lines = 0;
struct bound_box box;
struct boxlist *boxlist = Vect_new_boxlist(0);
struct ilist *reflist = Vect_new_list();
G_message(_("Snapping boundaries with %g ..."), snap);
/* snap boundaries in B to boundaries in A,
* not modifying boundaries in A */
if (BList->n_values > 1)
qsort(BList->value, BList->n_values, sizeof(int), cmp_int);
snapped_lines = 0;
nlines = BList->n_values;
for (i = 0; i < nlines; i++) {
line = BList->value[i];
Vect_read_line(Tmp, Points, Cats, line);
/* select lines by box */
Vect_get_line_box(Tmp, line, &box);
box.E += snap;
box.W -= snap;
box.N += snap;
box.S -= snap;
box.T = 0.0;
box.B = 0.0;
Vect_select_lines_by_box(Tmp, &box, GV_BOUNDARY, boxlist);
if (boxlist->n_values > 0) {
Vect_reset_list(reflist);
for (j = 0; j < boxlist->n_values; j++) {
int aline = boxlist->id[j];
if (!bsearch(&aline, BList->value, BList->n_values,
sizeof(int), cmp_int)) {
G_ilist_add(reflist, aline);
}
}
/* snap bline to alines */
if (Vect_snap_line(Tmp, reflist, Points, snap, 0, NULL, NULL)) {
/* rewrite bline*/
Vect_delete_line(Tmp, line);
ret = Vect_write_line(Tmp, GV_BOUNDARY, Points, Cats);
G_ilist_add(BList, ret);
snapped_lines++;
G_debug(3, "line %d snapped", line);
}
}
}
Vect_destroy_boxlist(boxlist);
Vect_destroy_list(reflist);
G_verbose_message(n_("%d boundary snapped",
"%d boundaries snapped",
snapped_lines), snapped_lines);
}
/* same procedure like for v.in.ogr:
* Vect_clean_small_angles_at_nodes() can change the geometry so that new intersections
* are created. We must call Vect_break_lines(), Vect_remove_duplicates()
* and Vect_clean_small_angles_at_nodes() until no more small dangles are found */
do {
G_message(_("Breaking lines..."));
Vect_break_lines_list(Tmp, NULL, BList, GV_BOUNDARY, NULL);
/* Probably not necessary for LINE x AREA */
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(Tmp, GV_BOUNDARY, NULL);
G_message(_("Cleaning boundaries at nodes..."));
nmodif =
Vect_clean_small_angles_at_nodes(Tmp, GV_BOUNDARY, NULL);
} while (nmodif > 0);
/* ?: May be result of Vect_break_lines() + Vect_remove_duplicates() any dangle or bridge?
* In that case, calls to Vect_remove_dangles() and Vect_remove_bridges() would be also necessary */
G_set_verbose(0);
/* should be fast, be silent */
Vect_build_partial(Tmp, GV_BUILD_AREAS);
G_set_verbose(verbose);
nlines = Vect_get_num_lines(Tmp);
ret = 0;
for (line = 1; line <= nlines; line++) {
if (!Vect_line_alive(Tmp, line))
continue;
if (Vect_get_line_type(Tmp, line) == GV_BOUNDARY) {
int left, rite;
Vect_get_line_areas(Tmp, line, &left, &rite);
if (left == 0 || rite == 0) {
/* invalid boundary */
ret = 1;
break;
}
}
}
if (ret) {
Vect_remove_dangles(Tmp, GV_BOUNDARY, -1, NULL);
Vect_remove_bridges(Tmp, NULL, NULL, NULL);
}
G_set_verbose(0);
Vect_build_partial(Tmp, GV_BUILD_NONE);
Vect_build_partial(Tmp, GV_BUILD_BASE);
G_set_verbose(verbose);
G_message(_("Merging lines..."));
Vect_merge_lines(Tmp, GV_BOUNDARY, NULL, NULL);
/* Attach islands */
G_message(_("Attaching islands..."));
/* can take some time, show messages */
Vect_build_partial(Tmp, GV_BUILD_ATTACH_ISLES);
/* Calculate new centroids for all areas */
nareas = Vect_get_num_areas(Tmp);
Centr = (CENTR *) G_malloc((nareas + 1) * sizeof(CENTR)); /* index from 1 ! */
for (area = 1; area <= nareas; area++) {
ret =
Vect_get_point_in_area(Tmp, area, &(Centr[area].x),
&(Centr[area].y));
if (ret < 0) {
G_warning(_("Cannot calculate area centroid"));
Centr[area].valid = 0;
}
else {
Centr[area].valid = 1;
}
}
/* Query input maps */
for (input = 0; input < 2; input++) {
G_message(_("Querying vector map <%s>..."),
Vect_get_full_name(&(In[input])));
for (area = 1; area <= nareas; area++) {
Centr[area].cat[input] = Vect_new_cats_struct();
G_percent(area, nareas, 1);
in_area =
Vect_find_area(&(In[input]), Centr[area].x, Centr[area].y);
if (in_area > 0) {
in_centr = Vect_get_area_centroid(&(In[input]), in_area);
if (in_centr > 0) {
int i;
Vect_read_line(&(In[input]), NULL, Cats, in_centr);
/* Add all cats with original field number */
for (i = 0; i < Cats->n_cats; i++) {
if (Cats->field[i] == field[input]) {
ATTR *at;
Vect_cat_set(Centr[area].cat[input], ofield[input + 1],
Cats->cat[i]);
/* Mark as used */
at = find_attr(&(attr[input]), Cats->cat[i]);
if (!at)
G_fatal_error(_("Attribute not found"));
at->used = 1;
}
}
}
}
}
}
G_message(_("Writing centroids..."));
db_init_string(&stmt);
out_cat = 1;
for (area = 1; area <= nareas; area++) {
int i;
G_percent(area, nareas, 1);
/* check the condition */
switch (operator) {
case OP_AND:
if (!
(Centr[area].cat[0]->n_cats > 0 &&
Centr[area].cat[1]->n_cats > 0))
continue;
break;
case OP_OR:
if (!
(Centr[area].cat[0]->n_cats > 0 ||
Centr[area].cat[1]->n_cats > 0))
continue;
break;
case OP_NOT:
if (!
(Centr[area].cat[0]->n_cats > 0 &&
!(Centr[area].cat[1]->n_cats > 0)))
continue;
break;
case OP_XOR:
if ((Centr[area].cat[0]->n_cats > 0 &&
Centr[area].cat[1]->n_cats > 0) ||
(!(Centr[area].cat[0]->n_cats > 0) &&
!(Centr[area].cat[1]->n_cats > 0)))
continue;
break;
}
Vect_reset_line(Points);
Vect_reset_cats(Cats);
Vect_append_point(Points, Centr[area].x, Centr[area].y, 0.0);
if (ofield[0] > 0) {
/* Add new cats for all combinations of input cats (-1 in cycle for null) */
for (i = -1; i < Centr[area].cat[0]->n_cats; i++) {
int j;
if (i == -1 && Centr[area].cat[0]->n_cats > 0)
continue; /* no need to make null */
for (j = -1; j < Centr[area].cat[1]->n_cats; j++) {
if (j == -1 && Centr[area].cat[1]->n_cats > 0)
continue; /* no need to make null */
if (ofield[0] > 0)
Vect_cat_set(Cats, ofield[0], out_cat);
/* attributes */
if (driver) {
ATTR *at;
sprintf(buf, "insert into %s values ( %d", Fi->table,
out_cat);
db_set_string(&stmt, buf);
/* cata */
if (i >= 0) {
if (attr[0].columns) {
at = find_attr(&(attr[0]),
Centr[area].cat[0]->cat[i]);
if (!at)
G_fatal_error(_("Attribute not found"));
if (at->values)
db_append_string(&stmt, at->values);
else
db_append_string(&stmt, attr[0].null_values);
}
else {
sprintf(buf, ", %d", Centr[area].cat[0]->cat[i]);
db_append_string(&stmt, buf);
}
}
else {
if (attr[0].columns) {
db_append_string(&stmt, attr[0].null_values);
}
else {
sprintf(buf, ", null");
db_append_string(&stmt, buf);
}
}
/* catb */
if (j >= 0) {
if (attr[1].columns) {
at = find_attr(&(attr[1]),
Centr[area].cat[1]->cat[j]);
if (!at)
G_fatal_error(_("Attribute not found"));
if (at->values)
db_append_string(&stmt, at->values);
else
db_append_string(&stmt, attr[1].null_values);
}
else {
sprintf(buf, ", %d", Centr[area].cat[1]->cat[j]);
db_append_string(&stmt, buf);
}
}
else {
if (attr[1].columns) {
db_append_string(&stmt, attr[1].null_values);
}
else {
sprintf(buf, ", null");
db_append_string(&stmt, buf);
}
}
db_append_string(&stmt, " )");
G_debug(3, "%s", db_get_string(&stmt));
if (db_execute_immediate(driver, &stmt) != DB_OK)
G_warning(_("Unable to insert new record: '%s'"),
db_get_string(&stmt));
}
out_cat++;
}
}
}
/* Add all cats from input vectors */
if (ofield[1] > 0 && field[0] > 0) {
for (i = 0; i < Centr[area].cat[0]->n_cats; i++) {
if (Centr[area].cat[0]->field[i] == field[0])
Vect_cat_set(Cats, ofield[1], Centr[area].cat[0]->cat[i]);
}
}
if (ofield[2] > 0 && field[1] > 0 && ofield[1] != ofield[2]) {
for (i = 0; i < Centr[area].cat[1]->n_cats; i++) {
if (Centr[area].cat[1]->field[i] == field[1])
Vect_cat_set(Cats, ofield[2], Centr[area].cat[1]->cat[i]);
}
}
Vect_write_line(Tmp, GV_CENTROID, Points, Cats);
Vect_write_line(Out, GV_CENTROID, Points, Cats);
}
G_set_verbose(0);
/* should be fast, be silent */
Vect_build_partial(Tmp, GV_BUILD_CENTROIDS);
G_set_verbose(verbose);
/* Copy valid boundaries to final output */
nlines = Vect_get_num_lines(Tmp);
for (line = 1; line <= nlines; line++) {
int i, ltype, side[2], centr[2];
G_percent(line, nlines, 1); /* must be before any continue */
if (!Vect_line_alive(Tmp, line))
continue;
ltype = Vect_read_line(Tmp, Points, Cats, line);
if (!(ltype & GV_BOUNDARY))
continue;
Vect_get_line_areas(Tmp, line, &side[0], &side[1]);
for (i = 0; i < 2; i++) {
if (side[i] == 0) { /* This should not happen ! */
centr[i] = 0;
continue;
}
if (side[i] > 0) {
area = side[i];
}
else { /* island */
area = Vect_get_isle_area(Tmp, abs(side[i]));
}
if (area > 0)
centr[i] = Vect_get_area_centroid(Tmp, area);
else
centr[i] = 0;
}
if (centr[0] || centr[1])
Vect_write_line(Out, GV_BOUNDARY, Points, Cats);
}
return 0;
}
int main(int argc, char *argv[])
{
char *p;
int i, j, k;
int method, half, use_catno;
const char *mapset;
struct GModule *module;
struct Option *point_opt, /* point vector */
*area_opt, /* area vector */
*point_type_opt, /* point type */
*point_field_opt, /* point layer */
*area_field_opt, /* area layer */
*method_opt, /* stats method */
*point_column_opt, /* point column for stats */
*count_column_opt, /* area column for point count */
*stats_column_opt, /* area column for stats result */
*fs_opt; /* field separator for printed output */
struct Flag *print_flag;
char *fs;
struct Map_info PIn, AIn;
int point_type, point_field, area_field;
struct line_pnts *Points;
struct line_cats *ACats, *PCats;
AREA_CAT *Area_cat;
int pline, ptype, count;
int area, nareas, nacats, nacatsalloc;
int ctype, nrec;
struct field_info *PFi, *AFi;
dbString stmt;
dbDriver *Pdriver, *Adriver;
char buf[2000];
int update_ok, update_err;
struct boxlist *List;
struct bound_box box;
dbCatValArray cvarr;
dbColumn *column;
struct pvalcat
{
double dval;
int catno;
} *pvalcats;
int npvalcats, npvalcatsalloc;
stat_func *statsvalue = NULL;
double result;
column = NULL;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("attribute table"));
G_add_keyword(_("database"));
G_add_keyword(_("univariate statistics"));
G_add_keyword(_("zonal statistics"));
module->description = _("Count points in areas, calculate statistics from point attributes.");
point_opt = G_define_standard_option(G_OPT_V_INPUT);
point_opt->key = "points";
point_opt->description = _("Name of existing vector map with points");
/* point_opt->guisection = _("Required"); */
area_opt = G_define_standard_option(G_OPT_V_INPUT);
area_opt->key = "areas";
area_opt->description = _("Name of existing vector map with areas");
/* area_opt->guisection = _("Required"); */
point_type_opt = G_define_standard_option(G_OPT_V_TYPE);
point_type_opt->key = "type";
point_type_opt->options = "point,centroid";
point_type_opt->answer = "point";
point_type_opt->label = _("Feature type");
point_type_opt->required = NO;
point_field_opt = G_define_standard_option(G_OPT_V_FIELD);
point_field_opt->key = "player";
point_field_opt->label = _("Layer number for points map");
area_field_opt = G_define_standard_option(G_OPT_V_FIELD);
area_field_opt->key = "alayer";
area_field_opt->label = _("Layer number for area map");
method_opt = G_define_option();
method_opt->key = "method";
method_opt->type = TYPE_STRING;
method_opt->required = NO;
method_opt->multiple = NO;
p = G_malloc(1024);
for (i = 0; menu[i].name; i++) {
if (i)
strcat(p, ",");
else
*p = 0;
strcat(p, menu[i].name);
}
method_opt->options = p;
method_opt->description = _("Method for aggregate statistics");
point_column_opt = G_define_standard_option(G_OPT_DB_COLUMN);
point_column_opt->key = "pcolumn";
point_column_opt->required = NO;
point_column_opt->multiple = NO;
point_column_opt->label =
_("Column name of points map to use for statistics");
point_column_opt->description = _("Column of points map must be numeric");
count_column_opt = G_define_option();
count_column_opt->key = "ccolumn";
count_column_opt->type = TYPE_STRING;
count_column_opt->required = NO;
count_column_opt->multiple = NO;
count_column_opt->label = _("Column name to upload points count");
count_column_opt->description =
_("Column to hold points count, must be of type integer, will be created if not existing");
stats_column_opt = G_define_option();
stats_column_opt->key = "scolumn";
stats_column_opt->type = TYPE_STRING;
stats_column_opt->required = NO;
stats_column_opt->multiple = NO;
stats_column_opt->label = _("Column name to upload statistics");
stats_column_opt->description =
_("Column to hold statistics, must be of type double, will be created if not existing");
fs_opt = G_define_standard_option(G_OPT_F_SEP);
print_flag = G_define_flag();
print_flag->key = 'p';
print_flag->label =
_("Print output to stdout, do not update attribute table");
print_flag->description = _("First column is always area category");
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
point_type = Vect_option_to_types(point_type_opt);
point_field = atoi(point_field_opt->answer);
area_field = atoi(area_field_opt->answer);
if (print_flag->answer)
/* get field separator */
fs = G_option_to_separator(fs_opt);
else
fs = NULL;
/* check for stats */
if (method_opt->answer) {
if (!point_column_opt->answer) {
G_fatal_error("Method but no point column selected");
}
if (!print_flag->answer && !stats_column_opt->answer)
G_fatal_error("Name for stats column is missing");
}
if (point_column_opt->answer) {
if (!method_opt->answer)
G_fatal_error("No method for statistics selected");
if (!print_flag->answer && !stats_column_opt->answer)
G_fatal_error("Name for stats column is missing");
}
/* Open points vector */
if ((mapset = G_find_vector2(point_opt->answer, "")) == NULL)
G_fatal_error(_("Vector map <%s> not found"), point_opt->answer);
Vect_set_open_level(2);
if (Vect_open_old(&PIn, point_opt->answer, mapset) < 0)
G_fatal_error(_("Unable to open vector map <%s>"), point_opt->answer);
/* Open areas vector */
if ((mapset = G_find_vector2(area_opt->answer, "")) == NULL)
G_fatal_error(_("Vector map <%s> not found"), area_opt->answer);
if (!print_flag->answer && strcmp(mapset, G_mapset()) != 0)
G_fatal_error(_("Vector map <%s> is not in user mapset and cannot be updated"),
area_opt->answer);
Vect_set_open_level(2);
if (Vect_open_old(&AIn, area_opt->answer, mapset) < 0)
G_fatal_error(_("Unable to open vector map <%s>"), area_opt->answer);
method = -1;
use_catno = 0;
half = 0;
if (method_opt->answer) {
/* get the method */
for (method = 0; (p = menu[method].name); method++)
if ((strcmp(p, method_opt->answer) == 0))
break;
if (!p) {
G_warning(_("<%s=%s> unknown %s"),
method_opt->key, method_opt->answer,
method_opt->answer);
G_usage();
exit(EXIT_FAILURE);
}
/* establish the statsvalue routine */
statsvalue = menu[method].method;
/* category number of lowest/highest value */
if ((strcmp(menu[method].name, menu[5].name) == 0) ||
(strcmp(menu[method].name, menu[7].name) == 0))
use_catno = 1;
G_debug(1, "method: %s, use cat value: %s", menu[method].name,
(use_catno == 1 ? "yes" : "no"));
}
/* Open database driver */
db_init_string(&stmt);
Adriver = NULL;
if (!print_flag->answer) {
AFi = Vect_get_field(&AIn, area_field);
if (AFi == NULL)
G_fatal_error(_("Database connection not defined for layer %d"),
area_field);
Adriver = db_start_driver_open_database(AFi->driver, AFi->database);
if (Adriver == NULL)
G_fatal_error(_("Unable to open database <%s> with driver <%s>"),
AFi->database, AFi->driver);
if (!count_column_opt->answer)
G_fatal_error(_("ccolumn is required to upload point counts"));
/* check if count column exists */
G_debug(1, "check if count column exists");
db_get_column(Adriver, AFi->table, count_column_opt->answer, &column);
if (column) {
/* check count column type */
if (db_column_Ctype(Adriver, AFi->table, count_column_opt->answer)
!= DB_C_TYPE_INT)
G_fatal_error(_("ccolumn must be of type integer"));
db_free_column(column);
column = NULL;
}
else {
/* create count column */
/* db_add_column() exists but is not implemented,
* see lib/db/stubs/add_col.c */
sprintf(buf, "alter table %s add column %s integer",
AFi->table, count_column_opt->answer);
db_set_string(&stmt, buf);
if (db_execute_immediate(Adriver, &stmt) != DB_OK)
G_fatal_error(_("Unable to add column <%s>"),
count_column_opt->answer);
}
if (method_opt->answer) {
if (!stats_column_opt->answer)
G_fatal_error(_("scolumn is required to upload point stats"));
/* check if stats column exists */
G_debug(1, "check if stats column exists");
db_get_column(Adriver, AFi->table, stats_column_opt->answer,
&column);
if (column) {
/* check stats column type */
if (db_column_Ctype
(Adriver, AFi->table,
stats_column_opt->answer) != DB_C_TYPE_DOUBLE)
G_fatal_error(_("scolumn must be of type double"));
db_free_column(column);
column = NULL;
}
else {
/* create stats column */
/* db_add_column() exists but is not implemented,
* see lib/db/stubs/add_col.c */
sprintf(buf, "alter table %s add column %s double",
AFi->table, stats_column_opt->answer);
db_set_string(&stmt, buf);
if (db_execute_immediate(Adriver, &stmt) != DB_OK)
G_fatal_error(_("Unable to add column <%s>"),
stats_column_opt->answer);
}
}
}
else
AFi = NULL;
Pdriver = NULL;
if (method_opt->answer) {
G_verbose_message(_("collecting attributes from points vector..."));
PFi = Vect_get_field(&PIn, point_field);
if (PFi == NULL)
G_fatal_error(_("Database connection not defined for layer %d"),
point_field);
Pdriver = db_start_driver_open_database(PFi->driver, PFi->database);
if (Pdriver == NULL)
G_fatal_error(_("Unable to open database <%s> with driver <%s>"),
PFi->database, PFi->driver);
/* check if point column exists */
db_get_column(Pdriver, PFi->table, point_column_opt->answer, &column);
if (column) {
db_free_column(column);
column = NULL;
}
else {
G_fatal_error(_("Column <%s> not found in table <%s>"),
point_column_opt->answer, PFi->table);
}
/* Check column type */
ctype =
db_column_Ctype(Pdriver, PFi->table, point_column_opt->answer);
if (ctype == DB_C_TYPE_INT)
half = menu[method].half;
else if (ctype == DB_C_TYPE_DOUBLE)
half = 0;
else
G_fatal_error(_("column for points vector must be numeric"));
db_CatValArray_init(&cvarr);
nrec = db_select_CatValArray(Pdriver, PFi->table, PFi->key,
point_column_opt->answer, NULL, &cvarr);
G_debug(1, "selected values = %d", nrec);
db_close_database_shutdown_driver(Pdriver);
}
Points = Vect_new_line_struct();
ACats = Vect_new_cats_struct();
PCats = Vect_new_cats_struct();
List = Vect_new_boxlist(0);
/* Allocate space ( may be more than needed (duplicate cats and elements without cats) ) */
if ((nareas = Vect_get_num_areas(&AIn)) <= 0)
G_fatal_error("No areas in area input vector");
nacatsalloc = nareas;
Area_cat = (AREA_CAT *) G_calloc(nacatsalloc, sizeof(AREA_CAT));
/* Read all cats from 'area' */
nacats = 0;
for (area = 1; area <= nareas; area++) {
Vect_get_area_cats(&AIn, area, ACats);
if (ACats->n_cats <= 0)
continue;
for (i = 0; i < ACats->n_cats; i++) {
if (ACats->field[i] == area_field) {
Area_cat[nacats].area_cat = ACats->cat[i];
Area_cat[nacats].count = 0;
Area_cat[nacats].nvalues = 0;
Area_cat[nacats].nalloc = 0;
nacats++;
if (nacats >= nacatsalloc) {
nacatsalloc += 100;
Area_cat =
(AREA_CAT *) G_realloc(Area_cat,
nacatsalloc *
sizeof(AREA_CAT));
}
}
}
}
G_debug(1, "%d cats loaded from vector (including duplicates)", nacats);
/* Sort by category */
qsort((void *)Area_cat, nacats, sizeof(AREA_CAT), cmp_area);
/* remove duplicate categories */
for (i = 1; i < nacats; i++) {
if (Area_cat[i].area_cat == Area_cat[i - 1].area_cat) {
for (j = i; j < nacats - 1; j++) {
Area_cat[j].area_cat = Area_cat[j + 1].area_cat;
}
nacats--;
}
}
G_debug(1, "%d cats loaded from vector (unique)", nacats);
/* Go through all areas in area vector and find points in points vector
* falling into the area */
npvalcatsalloc = 10;
npvalcats = 0;
pvalcats =
(struct pvalcat *)G_calloc(npvalcatsalloc, sizeof(struct pvalcat));
G_message(_("Selecting points for each area..."));
count = 0;
for (area = 1; area <= nareas; area++) {
dbCatVal *catval;
G_debug(3, "area = %d", area);
G_percent(area, nareas, 2);
Vect_get_area_cats(&AIn, area, ACats);
if (ACats->n_cats <= 0)
continue;
/* select points by box */
Vect_get_area_box(&AIn, area, &box);
box.T = PORT_DOUBLE_MAX;
box.B = -PORT_DOUBLE_MAX;
Vect_select_lines_by_box(&PIn, &box, point_type, List);
G_debug(4, "%d points selected by box", List->n_values);
/* For each point in box check if it is in the area */
for (i = 0; i < List->n_values; i++) {
pline = List->id[i];
G_debug(4, "%d: point %d", i, pline);
ptype = Vect_read_line(&PIn, Points, PCats, pline);
if (!(ptype & point_type))
continue;
/* point in area */
if (Vect_point_in_area(Points->x[0], Points->y[0], &AIn, area, &box)) {
AREA_CAT *area_info, search_ai;
int tmp_cat;
/* stats on point column */
if (method_opt->answer) {
npvalcats = 0;
tmp_cat = -1;
for (j = 0; j < PCats->n_cats; j++) {
if (PCats->field[j] == point_field) {
if (tmp_cat >= 0)
G_debug(3,
"More cats found in point layer (point=%d)",
pline);
tmp_cat = PCats->cat[j];
/* find cat in array */
db_CatValArray_get_value(&cvarr, tmp_cat,
&catval);
if (catval) {
pvalcats[npvalcats].catno = tmp_cat;
switch (cvarr.ctype) {
case DB_C_TYPE_INT:
pvalcats[npvalcats].dval = catval->val.i;
npvalcats++;
break;
case DB_C_TYPE_DOUBLE:
pvalcats[npvalcats].dval = catval->val.d;
npvalcats++;
break;
}
if (npvalcats >= npvalcatsalloc) {
npvalcatsalloc += 10;
pvalcats =
(struct pvalcat *)G_realloc(pvalcats,
npvalcatsalloc
*
sizeof
(struct
pvalcat));
}
}
}
}
}
/* update count for all area cats of given field */
search_ai.area_cat = -1;
for (j = 0; j < ACats->n_cats; j++) {
if (ACats->field[j] == area_field) {
if (search_ai.area_cat >= 0)
G_debug(3,
"More cats found in area layer (area=%d)",
area);
search_ai.area_cat = ACats->cat[j];
/* find cat in array */
area_info =
(AREA_CAT *) bsearch((void *)&search_ai, Area_cat,
nacats, sizeof(AREA_CAT),
cmp_area);
if (area_info->area_cat != search_ai.area_cat)
G_fatal_error(_("could not find area category %d"),
search_ai.area_cat);
/* each point is counted once, also if it has
* more than one category or no category
* OK? */
area_info->count++;
if (method_opt->answer) {
/* ensure enough space */
if (area_info->nvalues + npvalcats >=
area_info->nalloc) {
if (area_info->nalloc == 0) {
area_info->nalloc = npvalcats + 10;
area_info->values =
(double *)G_calloc(area_info->nalloc,
sizeof(double));
area_info->cats =
(int *)G_calloc(area_info->nalloc,
sizeof(int));
}
else
area_info->nalloc +=
area_info->nvalues + npvalcats + 10;
area_info->values =
(double *)G_realloc(area_info->values,
area_info->nalloc *
sizeof(double));
area_info->cats =
(int *)G_realloc(area_info->cats,
area_info->nalloc *
sizeof(int));
}
for (k = 0; k < npvalcats; k++) {
area_info->cats[area_info->nvalues] =
pvalcats[k].catno;
area_info->values[area_info->nvalues] =
pvalcats[k].dval;
area_info->nvalues++;
}
}
}
}
count++;
}
} /* next point in box */
} /* next area */
G_debug(1, "count = %d", count);
/* release catval array */
if (method_opt->answer)
db_CatValArray_free(&cvarr);
Vect_close(&PIn);
/* Update table or print to stdout */
if (print_flag->answer) { /* print header */
fprintf(stdout, "area_cat%scount", fs);
if (method_opt->answer)
fprintf(stdout, "%s%s", fs, menu[method].name);
fprintf(stdout, "\n");
}
else {
G_message("Updating attributes for area vector...");
update_err = update_ok = 0;
}
if (Adriver)
db_begin_transaction(Adriver);
for (i = 0; i < nacats; i++) {
if (!print_flag->answer)
G_percent(i, nacats, 2);
result = 0;
if (Area_cat[i].count > 0 && method_opt->answer) {
/* get stats */
statsvalue(&result, Area_cat[i].values, Area_cat[i].nvalues,
NULL);
if (half)
result += 0.5;
else if (use_catno)
result = Area_cat[i].cats[(int)result];
}
if (print_flag->answer) {
fprintf(stdout, "%d%s%d", Area_cat[i].area_cat, fs,
Area_cat[i].count);
if (method_opt->answer) {
if (Area_cat[i].count > 0)
fprintf(stdout, "%s%.15g", fs, result);
else
fprintf(stdout, "%snull", fs);
}
fprintf(stdout, "\n");
}
else {
sprintf(buf, "update %s set %s = %d", AFi->table,
count_column_opt->answer, Area_cat[i].count);
db_set_string(&stmt, buf);
if (method_opt->answer) {
if (Area_cat[i].count > 0)
sprintf(buf, " , %s = %.15g", stats_column_opt->answer,
result);
else
sprintf(buf, " , %s = null", stats_column_opt->answer);
db_append_string(&stmt, buf);
}
sprintf(buf, " where %s = %d", AFi->key, Area_cat[i].area_cat);
db_append_string(&stmt, buf);
G_debug(2, "SQL: %s", db_get_string(&stmt));
if (db_execute_immediate(Adriver, &stmt) == DB_OK) {
update_ok++;
}
else {
update_err++;
}
}
}
if (Adriver)
db_commit_transaction(Adriver);
if (!print_flag->answer) {
G_percent(nacats, nacats, 2);
db_close_database_shutdown_driver(Adriver);
db_free_string(&stmt);
G_message(_("%d records updated"), update_ok);
if (update_err > 0)
G_message(_("%d update errors"), update_err);
Vect_set_db_updated(&AIn);
}
Vect_close(&AIn);
G_done_msg(" ");
exit(EXIT_SUCCESS);
}
/*!
\brief Select pairs key/value to array, values are sorted by key (must be integer)
\param driver DB driver
\param tab table name
\param key key column name
\param col value column name
\param[out] cvarr dbCatValArray to store within
\return number of selected values
\return -1 on error
*/
int db_select_CatValArray(dbDriver * driver, const char *tab, const char *key,
const char *col, const char *where,
dbCatValArray * cvarr)
{
int i, type, more, nrows;
char buf[1024];
dbString stmt;
dbCursor cursor;
dbColumn *column;
dbValue *value;
dbTable *table;
G_debug(3, "db_select_CatValArray ()");
if (key == NULL || strlen(key) == 0) {
G_warning(_("Missing key column name"));
return -1;
}
if (col == NULL || strlen(col) == 0) {
G_warning(_("Missing column name"));
return -1;
}
db_init_string(&stmt);
sprintf(buf, "SELECT %s, %s FROM %s", key, col, tab);
db_set_string(&stmt, buf);
if (where != NULL && strlen(where) > 0) {
db_append_string(&stmt, " WHERE ");
db_append_string(&stmt, where);
}
G_debug(3, " SQL: %s", db_get_string(&stmt));
if (db_open_select_cursor(driver, &stmt, &cursor, DB_SEQUENTIAL) != DB_OK)
return (-1);
nrows = db_get_num_rows(&cursor);
G_debug(3, " %d rows selected", nrows);
if (nrows < 0) {
G_warning(_("Unable select records from table <%s>"), tab);
db_close_cursor(&cursor);
db_free_string(&stmt);
return -1;
}
db_CatValArray_alloc(cvarr, nrows);
table = db_get_cursor_table(&cursor);
/* Check if key column is integer */
column = db_get_table_column(table, 0);
type = db_sqltype_to_Ctype(db_get_column_sqltype(column));
G_debug(3, " key type = %d", type);
if (type != DB_C_TYPE_INT) {
G_warning(_("Key column type is not integer"));
db_close_cursor(&cursor);
db_free_string(&stmt);
return -1;
}
column = db_get_table_column(table, 1);
type = db_sqltype_to_Ctype(db_get_column_sqltype(column));
G_debug(3, " col type = %d", type);
/*
if ( type != DB_C_TYPE_INT && type != DB_C_TYPE_DOUBLE ) {
G_fatal_error ( "Column type not supported by db_select_to_array()" );
}
*/
cvarr->ctype = type;
/* fetch the data */
for (i = 0; i < nrows; i++) {
if (db_fetch(&cursor, DB_NEXT, &more) != DB_OK)
return (-1);
column = db_get_table_column(table, 0); /* first column */
value = db_get_column_value(column);
cvarr->value[i].cat = db_get_value_int(value);
column = db_get_table_column(table, 1);
value = db_get_column_value(column);
cvarr->value[i].isNull = value->isNull;
switch (type) {
case (DB_C_TYPE_INT):
if (value->isNull)
cvarr->value[i].val.i = 0;
else
cvarr->value[i].val.i = db_get_value_int(value);
break;
case (DB_C_TYPE_DOUBLE):
if (value->isNull)
cvarr->value[i].val.d = 0.0;
else
cvarr->value[i].val.d = db_get_value_double(value);
break;
case (DB_C_TYPE_STRING):
cvarr->value[i].val.s = (dbString *) malloc(sizeof(dbString));
db_init_string(cvarr->value[i].val.s);
if (!(value->isNull))
db_set_string(cvarr->value[i].val.s,
db_get_value_string(value));
break;
case (DB_C_TYPE_DATETIME):
cvarr->value[i].val.t =
(dbDateTime *) calloc(1, sizeof(dbDateTime));
if (!(value->isNull))
memcpy(cvarr->value[i].val.t, &(value->t),
sizeof(dbDateTime));
break;
default:
return (-1);
}
}
cvarr->n_values = nrows;
db_close_cursor(&cursor);
db_free_string(&stmt);
db_CatValArray_sort(cvarr);
return (nrows);
}
/*!
\brief Select array of ordered integers from table/column
\param driver DB driver
\param tab table name
\param col column name
\param where where statement
\param[out] pval array of ordered integer values
\return number of selected values
\return -1 on error
*/
int db_select_int(dbDriver * driver, const char *tab, const char *col,
const char *where, int **pval)
{
int type, more, alloc, count;
int *val;
char buf[1024];
const char *sval;
dbString stmt;
dbCursor cursor;
dbColumn *column;
dbValue *value;
dbTable *table;
G_debug(3, "db_select_int()");
if (col == NULL || strlen(col) == 0) {
G_warning(_("Missing column name"));
return -1;
}
/* allocate */
alloc = 1000;
val = (int *)G_malloc(alloc * sizeof(int));
if (where == NULL || strlen(where) == 0)
G_snprintf(buf, 1023, "SELECT %s FROM %s", col, tab);
else
G_snprintf(buf, 1023, "SELECT %s FROM %s WHERE %s", col, tab, where);
G_debug(3, " SQL: %s", buf);
db_init_string(&stmt);
db_append_string(&stmt, buf);
if (db_open_select_cursor(driver, &stmt, &cursor, DB_SEQUENTIAL) != DB_OK)
return (-1);
table = db_get_cursor_table(&cursor);
column = db_get_table_column(table, 0); /* first column */
if (column == NULL) {
return -1;
}
value = db_get_column_value(column);
type = db_get_column_sqltype(column);
type = db_sqltype_to_Ctype(type);
/* fetch the data */
count = 0;
while (1) {
if (db_fetch(&cursor, DB_NEXT, &more) != DB_OK)
return (-1);
if (!more)
break;
if (count == alloc) {
alloc += 1000;
val = (int *)G_realloc(val, alloc * sizeof(int));
}
switch (type) {
case (DB_C_TYPE_INT):
val[count] = db_get_value_int(value);
break;
case (DB_C_TYPE_STRING):
sval = db_get_value_string(value);
val[count] = atoi(sval);
break;
case (DB_C_TYPE_DOUBLE):
val[count] = (int)db_get_value_double(value);
break;
default:
return (-1);
}
count++;
}
db_close_cursor(&cursor);
db_free_string(&stmt);
qsort((void *)val, count, sizeof(int), cmp);
*pval = val;
return (count);
}
int main(int argc, char *argv[])
{
struct GModule *module;
struct _param {
struct Option *dsn, *out, *layer, *spat, *where,
*min_area;
struct Option *snap, *type, *outloc, *cnames;
} param;
struct _flag {
struct Flag *list, *tlist, *no_clean, *z, *notab,
*region;
struct Flag *over, *extend, *formats, *tolower, *no_import;
} flag;
int i, j, layer, arg_s_num, nogeom, ncnames;
float xmin, ymin, xmax, ymax;
int ncols = 0, type;
double min_area, snap;
char buf[2000], namebuf[2000], tempvect[GNAME_MAX];
char *separator;
struct Key_Value *loc_proj_info, *loc_proj_units;
struct Key_Value *proj_info, *proj_units;
struct Cell_head cellhd, loc_wind, cur_wind;
char error_msg[8192];
/* Vector */
struct Map_info Map, Tmp, *Out;
int cat;
/* Attributes */
struct field_info *Fi;
dbDriver *driver;
dbString sql, strval;
int dim, with_z;
/* OGR */
OGRDataSourceH Ogr_ds;
OGRLayerH Ogr_layer;
OGRFieldDefnH Ogr_field;
char *Ogr_fieldname;
OGRFieldType Ogr_ftype;
OGRFeatureH Ogr_feature;
OGRFeatureDefnH Ogr_featuredefn;
OGRGeometryH Ogr_geometry, Ogr_oRing, poSpatialFilter;
OGRSpatialReferenceH Ogr_projection;
OGREnvelope oExt;
OGRwkbGeometryType Ogr_geom_type;
int OFTIntegerListlength;
char *output;
char **layer_names; /* names of layers to be imported */
int *layers; /* layer indexes */
int nlayers; /* number of layers to import */
char **available_layer_names; /* names of layers to be imported */
int navailable_layers;
int layer_id;
unsigned int n_features, feature_count;
int overwrite;
double area_size;
int use_tmp_vect;
xmin = ymin = xmax = ymax = 0.0;
loc_proj_info = loc_proj_units = NULL;
Ogr_ds = Ogr_oRing = poSpatialFilter = NULL;
OFTIntegerListlength = 40; /* hack due to limitation in OGR */
area_size = 0.0;
use_tmp_vect = FALSE;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("import"));
module->description = _("Converts vector data into a GRASS vector map using OGR library.");
param.dsn = G_define_option();
param.dsn->key = "dsn";
param.dsn->type = TYPE_STRING;
param.dsn->required =YES;
param.dsn->label = _("OGR datasource name");
param.dsn->description = _("Examples:\n"
"\t\tESRI Shapefile: directory containing shapefiles\n"
"\t\tMapInfo File: directory containing mapinfo files");
param.layer = G_define_option();
param.layer->key = "layer";
param.layer->type = TYPE_STRING;
param.layer->required = NO;
param.layer->multiple = YES;
param.layer->label =
_("OGR layer name. If not given, all available layers are imported");
param.layer->description =
_("Examples:\n" "\t\tESRI Shapefile: shapefile name\n"
"\t\tMapInfo File: mapinfo file name");
param.layer->guisection = _("Selection");
param.out = G_define_standard_option(G_OPT_V_OUTPUT);
param.out->required = NO;
param.out->guisection = _("Output");
param.spat = G_define_option();
param.spat->key = "spatial";
param.spat->type = TYPE_DOUBLE;
param.spat->multiple = YES;
param.spat->required = NO;
param.spat->key_desc = "xmin,ymin,xmax,ymax";
param.spat->label = _("Import subregion only");
param.spat->guisection = _("Selection");
param.spat->description =
_("Format: xmin,ymin,xmax,ymax - usually W,S,E,N");
param.where = G_define_standard_option(G_OPT_DB_WHERE);
param.where->guisection = _("Selection");
param.min_area = G_define_option();
param.min_area->key = "min_area";
param.min_area->type = TYPE_DOUBLE;
param.min_area->required = NO;
param.min_area->answer = "0.0001";
param.min_area->label =
_("Minimum size of area to be imported (square units)");
param.min_area->guisection = _("Selection");
param.min_area->description = _("Smaller areas and "
"islands are ignored. Should be greater than snap^2");
param.type = G_define_standard_option(G_OPT_V_TYPE);
param.type->options = "point,line,boundary,centroid";
param.type->answer = "";
param.type->description = _("Optionally change default input type");
param.type->descriptions =
_("point;import area centroids as points;"
"line;import area boundaries as lines;"
"boundary;import lines as area boundaries;"
"centroid;import points as centroids");
param.type->guisection = _("Selection");
param.snap = G_define_option();
param.snap->key = "snap";
param.snap->type = TYPE_DOUBLE;
param.snap->required = NO;
param.snap->answer = "-1";
param.snap->label = _("Snapping threshold for boundaries");
param.snap->description = _("'-1' for no snap");
param.outloc = G_define_option();
param.outloc->key = "location";
param.outloc->type = TYPE_STRING;
param.outloc->required = NO;
param.outloc->description = _("Name for new location to create");
param.outloc->key_desc = "name";
param.cnames = G_define_option();
param.cnames->key = "cnames";
param.cnames->type = TYPE_STRING;
param.cnames->required = NO;
param.cnames->multiple = YES;
param.cnames->description =
_("List of column names to be used instead of original names, "
"first is used for category column");
param.cnames->guisection = _("Attributes");
flag.list = G_define_flag();
flag.list->key = 'l';
flag.list->description = _("List available OGR layers in data source and exit");
flag.list->suppress_required = YES;
flag.list->guisection = _("Print");
flag.tlist = G_define_flag();
flag.tlist->key = 'a';
flag.tlist->description = _("List available OGR layers including feature types "
"in data source and exit");
flag.tlist->suppress_required = YES;
flag.tlist->guisection = _("Print");
flag.formats = G_define_flag();
flag.formats->key = 'f';
flag.formats->description = _("List supported formats and exit");
flag.formats->suppress_required = YES;
flag.formats->guisection = _("Print");
/* if using -c, you lose topological information ! */
flag.no_clean = G_define_flag();
flag.no_clean->key = 'c';
flag.no_clean->description = _("Do not clean polygons (not recommended)");
flag.no_clean->guisection = _("Output");
flag.z = G_define_flag();
flag.z->key = 'z';
flag.z->description = _("Create 3D output");
flag.z->guisection = _("Output");
flag.notab = G_define_flag();
flag.notab->key = 't';
flag.notab->description = _("Do not create attribute table");
flag.notab->guisection = _("Attributes");
flag.over = G_define_flag();
flag.over->key = 'o';
flag.over->description =
_("Override dataset projection (use location's projection)");
flag.region = G_define_flag();
flag.region->key = 'r';
flag.region->guisection = _("Selection");
flag.region->description = _("Limit import to the current region");
flag.extend = G_define_flag();
flag.extend->key = 'e';
flag.extend->description =
_("Extend location extents based on new dataset");
flag.tolower = G_define_flag();
flag.tolower->key = 'w';
flag.tolower->description =
_("Change column names to lowercase characters");
flag.tolower->guisection = _("Attributes");
flag.no_import = G_define_flag();
flag.no_import->key = 'i';
flag.no_import->description =
_("Create the location specified by the \"location\" parameter and exit."
" Do not import the vector data.");
/* The parser checks if the map already exists in current mapset, this is
* wrong if location options is used, so we switch out the check and do it
* in the module after the parser */
overwrite = G_check_overwrite(argc, argv);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
G_begin_polygon_area_calculations(); /* Used in geom() */
OGRRegisterAll();
/* list supported formats */
if (flag.formats->answer) {
int iDriver;
G_message(_("Available OGR Drivers:"));
for (iDriver = 0; iDriver < OGRGetDriverCount(); iDriver++) {
OGRSFDriverH poDriver = OGRGetDriver(iDriver);
const char *pszRWFlag;
if (OGR_Dr_TestCapability(poDriver, ODrCCreateDataSource))
pszRWFlag = "rw";
else
pszRWFlag = "ro";
fprintf(stdout, " %s (%s): %s\n",
OGR_Dr_GetName(poDriver),
pszRWFlag, OGR_Dr_GetName(poDriver));
}
exit(EXIT_SUCCESS);
}
if (param.dsn->answer == NULL) {
G_fatal_error(_("Required parameter <%s> not set"), param.dsn->key);
}
min_area = atof(param.min_area->answer);
snap = atof(param.snap->answer);
type = Vect_option_to_types(param.type);
ncnames = 0;
if (param.cnames->answers) {
i = 0;
while (param.cnames->answers[i++]) {
ncnames++;
}
}
/* Open OGR DSN */
Ogr_ds = NULL;
if (strlen(param.dsn->answer) > 0)
Ogr_ds = OGROpen(param.dsn->answer, FALSE, NULL);
if (Ogr_ds == NULL)
G_fatal_error(_("Unable to open data source <%s>"), param.dsn->answer);
/* Make a list of available layers */
navailable_layers = OGR_DS_GetLayerCount(Ogr_ds);
available_layer_names =
(char **)G_malloc(navailable_layers * sizeof(char *));
if (flag.list->answer || flag.tlist->answer)
G_message(_("Data source <%s> (format '%s') contains %d layers:"),
param.dsn->answer,
OGR_Dr_GetName(OGR_DS_GetDriver(Ogr_ds)), navailable_layers);
for (i = 0; i < navailable_layers; i++) {
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, i);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
Ogr_geom_type = OGR_FD_GetGeomType(Ogr_featuredefn);
available_layer_names[i] =
G_store((char *)OGR_FD_GetName(Ogr_featuredefn));
if (flag.tlist->answer)
fprintf(stdout, "%s (%s)\n", available_layer_names[i],
OGRGeometryTypeToName(Ogr_geom_type));
else if (flag.list->answer)
fprintf(stdout, "%s\n", available_layer_names[i]);
}
if (flag.list->answer || flag.tlist->answer) {
fflush(stdout);
exit(EXIT_SUCCESS);
}
/* Make a list of layers to be imported */
if (param.layer->answer) { /* From option */
nlayers = 0;
while (param.layer->answers[nlayers])
nlayers++;
layer_names = (char **)G_malloc(nlayers * sizeof(char *));
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++) {
layer_names[i] = G_store(param.layer->answers[i]);
/* Find it in the source */
layers[i] = -1;
for (j = 0; j < navailable_layers; j++) {
if (strcmp(available_layer_names[j], layer_names[i]) == 0) {
layers[i] = j;
break;
}
}
if (layers[i] == -1)
G_fatal_error(_("Layer <%s> not available"), layer_names[i]);
}
}
else { /* use list of all layers */
nlayers = navailable_layers;
layer_names = available_layer_names;
layers = (int *)G_malloc(nlayers * sizeof(int));
for (i = 0; i < nlayers; i++)
layers[i] = i;
}
if (param.out->answer) {
output = G_store(param.out->answer);
}
else {
if (nlayers < 1)
G_fatal_error(_("No OGR layers available"));
output = G_store(layer_names[0]);
G_message(_("All available OGR layers will be imported into vector map <%s>"), output);
}
if (!param.outloc->answer) { /* Check if the map exists */
if (G_find_vector2(output, G_mapset()) && !overwrite)
G_fatal_error(_("Vector map <%s> already exists"),
output);
}
/* Get first imported layer to use for extents and projection check */
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layers[0]);
if (flag.region->answer) {
if (param.spat->answer)
G_fatal_error(_("Select either the current region flag or the spatial option, not both"));
G_get_window(&cur_wind);
xmin = cur_wind.west;
xmax = cur_wind.east;
ymin = cur_wind.south;
ymax = cur_wind.north;
}
if (param.spat->answer) {
/* See as reference: gdal/ogr/ogr_capi_test.c */
/* cut out a piece of the map */
/* order: xmin,ymin,xmax,ymax */
arg_s_num = 0;
i = 0;
while (param.spat->answers[i]) {
if (i == 0)
xmin = atof(param.spat->answers[i]);
if (i == 1)
ymin = atof(param.spat->answers[i]);
if (i == 2)
xmax = atof(param.spat->answers[i]);
if (i == 3)
ymax = atof(param.spat->answers[i]);
arg_s_num++;
i++;
}
if (arg_s_num != 4)
G_fatal_error(_("4 parameters required for 'spatial' parameter"));
}
if (param.spat->answer || flag.region->answer) {
G_debug(2, "cut out with boundaries: xmin:%f ymin:%f xmax:%f ymax:%f",
xmin, ymin, xmax, ymax);
/* in theory this could be an irregular polygon */
poSpatialFilter = OGR_G_CreateGeometry(wkbPolygon);
Ogr_oRing = OGR_G_CreateGeometry(wkbLinearRing);
OGR_G_AddPoint(Ogr_oRing, xmin, ymin, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmin, ymax, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmax, ymax, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmax, ymin, 0.0);
OGR_G_AddPoint(Ogr_oRing, xmin, ymin, 0.0);
OGR_G_AddGeometryDirectly(poSpatialFilter, Ogr_oRing);
OGR_L_SetSpatialFilter(Ogr_layer, poSpatialFilter);
}
if (param.where->answer) {
/* select by attribute */
OGR_L_SetAttributeFilter(Ogr_layer, param.where->answer);
}
/* fetch boundaries */
if ((OGR_L_GetExtent(Ogr_layer, &oExt, 1)) == OGRERR_NONE) {
G_get_window(&cellhd);
cellhd.north = oExt.MaxY;
cellhd.south = oExt.MinY;
cellhd.west = oExt.MinX;
cellhd.east = oExt.MaxX;
cellhd.rows = 20; /* TODO - calculate useful values */
cellhd.cols = 20;
cellhd.ns_res = (cellhd.north - cellhd.south) / cellhd.rows;
cellhd.ew_res = (cellhd.east - cellhd.west) / cellhd.cols;
}
else {
cellhd.north = 1.;
cellhd.south = 0.;
cellhd.west = 0.;
cellhd.east = 1.;
cellhd.top = 1.;
cellhd.bottom = 1.;
cellhd.rows = 1;
cellhd.rows3 = 1;
cellhd.cols = 1;
cellhd.cols3 = 1;
cellhd.depths = 1;
cellhd.ns_res = 1.;
cellhd.ns_res3 = 1.;
cellhd.ew_res = 1.;
cellhd.ew_res3 = 1.;
cellhd.tb_res = 1.;
}
/* suppress boundary splitting ? */
if (flag.no_clean->answer) {
split_distance = -1.;
}
else {
split_distance = 0.;
area_size =
sqrt((cellhd.east - cellhd.west) * (cellhd.north - cellhd.south));
}
/* Fetch input map projection in GRASS form. */
proj_info = NULL;
proj_units = NULL;
Ogr_projection = OGR_L_GetSpatialRef(Ogr_layer); /* should not be freed later */
/* Do we need to create a new location? */
if (param.outloc->answer != NULL) {
/* Convert projection information non-interactively as we can't
* assume the user has a terminal open */
if (GPJ_osr_to_grass(&cellhd, &proj_info,
&proj_units, Ogr_projection, 0) < 0) {
G_fatal_error(_("Unable to convert input map projection to GRASS "
"format; cannot create new location."));
}
else {
G_make_location(param.outloc->answer, &cellhd,
proj_info, proj_units, NULL);
G_message(_("Location <%s> created"), param.outloc->answer);
}
/* If the i flag is set, clean up? and exit here */
if(flag.no_import->answer)
{
exit(EXIT_SUCCESS);
}
}
else {
int err = 0;
/* Projection only required for checking so convert non-interactively */
if (GPJ_osr_to_grass(&cellhd, &proj_info,
&proj_units, Ogr_projection, 0) < 0)
G_warning(_("Unable to convert input map projection information to "
"GRASS format for checking"));
/* Does the projection of the current location match the dataset? */
/* G_get_window seems to be unreliable if the location has been changed */
G__get_window(&loc_wind, "", "DEFAULT_WIND", "PERMANENT");
/* fetch LOCATION PROJ info */
if (loc_wind.proj != PROJECTION_XY) {
loc_proj_info = G_get_projinfo();
loc_proj_units = G_get_projunits();
}
if (flag.over->answer) {
cellhd.proj = loc_wind.proj;
cellhd.zone = loc_wind.zone;
G_message(_("Over-riding projection check"));
}
else if (loc_wind.proj != cellhd.proj
|| (err =
G_compare_projections(loc_proj_info, loc_proj_units,
proj_info, proj_units)) != TRUE) {
int i_value;
strcpy(error_msg,
_("Projection of dataset does not"
" appear to match current location.\n\n"));
/* TODO: output this info sorted by key: */
if (loc_wind.proj != cellhd.proj || err != -2) {
if (loc_proj_info != NULL) {
strcat(error_msg, _("GRASS LOCATION PROJ_INFO is:\n"));
for (i_value = 0; i_value < loc_proj_info->nitems;
i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
loc_proj_info->key[i_value],
loc_proj_info->value[i_value]);
strcat(error_msg, "\n");
}
if (proj_info != NULL) {
strcat(error_msg, _("Import dataset PROJ_INFO is:\n"));
for (i_value = 0; i_value < proj_info->nitems; i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
proj_info->key[i_value],
proj_info->value[i_value]);
}
else {
strcat(error_msg, _("Import dataset PROJ_INFO is:\n"));
if (cellhd.proj == PROJECTION_XY)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (unreferenced/unknown)\n",
cellhd.proj);
else if (cellhd.proj == PROJECTION_LL)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (lat/long)\n",
cellhd.proj);
else if (cellhd.proj == PROJECTION_UTM)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (UTM), zone = %d\n",
cellhd.proj, cellhd.zone);
else if (cellhd.proj == PROJECTION_SP)
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (State Plane), zone = %d\n",
cellhd.proj, cellhd.zone);
else
sprintf(error_msg + strlen(error_msg),
"Dataset proj = %d (unknown), zone = %d\n",
cellhd.proj, cellhd.zone);
}
}
else {
if (loc_proj_units != NULL) {
strcat(error_msg, "GRASS LOCATION PROJ_UNITS is:\n");
for (i_value = 0; i_value < loc_proj_units->nitems;
i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
loc_proj_units->key[i_value],
loc_proj_units->value[i_value]);
strcat(error_msg, "\n");
}
if (proj_units != NULL) {
strcat(error_msg, "Import dataset PROJ_UNITS is:\n");
for (i_value = 0; i_value < proj_units->nitems; i_value++)
sprintf(error_msg + strlen(error_msg), "%s: %s\n",
proj_units->key[i_value],
proj_units->value[i_value]);
}
}
sprintf(error_msg + strlen(error_msg),
_("\nYou can use the -o flag to %s to override this projection check.\n"),
G_program_name());
strcat(error_msg,
_("Consider generating a new location with 'location' parameter"
" from input data set.\n"));
G_fatal_error(error_msg);
}
else {
G_message(_("Projection of input dataset and current location "
"appear to match"));
}
}
db_init_string(&sql);
db_init_string(&strval);
/* open output vector */
/* strip any @mapset from vector output name */
G_find_vector(output, G_mapset());
Vect_open_new(&Map, output, flag.z->answer != 0);
Out = ⤅
n_polygon_boundaries = 0;
if (!flag.no_clean->answer) {
/* check if we need a tmp vector */
/* estimate distance for boundary splitting --> */
for (layer = 0; layer < nlayers; layer++) {
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
n_features = feature_count = 0;
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
OGR_L_ResetReading(Ogr_layer);
/* count polygons and isles */
G_message(_("Counting polygons for %d features (OGR layer <%s>)..."),
n_features, layer_names[layer]);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
G_percent(feature_count++, n_features, 1); /* show something happens */
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry != NULL) {
poly_count(Ogr_geometry, (type & GV_BOUNDARY));
}
OGR_F_Destroy(Ogr_feature);
}
}
G_debug(1, "n polygon boundaries: %d", n_polygon_boundaries);
if (n_polygon_boundaries > 50) {
split_distance =
area_size / log(n_polygon_boundaries);
/* divisor is the handle: increase divisor to decrease split_distance */
split_distance = split_distance / 5.;
G_debug(1, "root of area size: %f", area_size);
G_verbose_message(_("Boundary splitting distance in map units: %G"),
split_distance);
}
/* <-- estimate distance for boundary splitting */
use_tmp_vect = n_polygon_boundaries > 0;
if (use_tmp_vect) {
/* open temporary vector, do the work in the temporary vector
* at the end copy alive lines to output vector
* in case of polygons this reduces the coor file size by a factor of 2 to 5
* only needed when cleaning polygons */
sprintf(tempvect, "%s_tmp", output);
G_verbose_message(_("Using temporary vector <%s>"), tempvect);
Vect_open_new(&Tmp, tempvect, flag.z->answer != 0);
Out = &Tmp;
}
}
Vect_hist_command(&Map);
/* Points and lines are written immediately with categories. Boundaries of polygons are
* written to the vector then cleaned and centroids are calculated for all areas in cleaan vector.
* Then second pass through finds all centroids in each polygon feature and adds its category
* to the centroid. The result is that one centroids may have 0, 1 ore more categories
* of one ore more (more input layers) fields. */
with_z = 0;
for (layer = 0; layer < nlayers; layer++) {
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
Ogr_featuredefn = OGR_L_GetLayerDefn(Ogr_layer);
/* Add DB link */
if (!flag.notab->answer) {
char *cat_col_name = GV_KEY_COLUMN;
if (nlayers == 1) { /* one layer only */
Fi = Vect_default_field_info(&Map, layer + 1, NULL,
GV_1TABLE);
}
else {
Fi = Vect_default_field_info(&Map, layer + 1, NULL,
GV_MTABLE);
}
if (ncnames > 0) {
cat_col_name = param.cnames->answers[0];
}
Vect_map_add_dblink(&Map, layer + 1, layer_names[layer], Fi->table,
cat_col_name, Fi->database, Fi->driver);
ncols = OGR_FD_GetFieldCount(Ogr_featuredefn);
G_debug(2, "%d columns", ncols);
/* Create table */
sprintf(buf, "create table %s (%s integer", Fi->table,
cat_col_name);
db_set_string(&sql, buf);
for (i = 0; i < ncols; i++) {
Ogr_field = OGR_FD_GetFieldDefn(Ogr_featuredefn, i);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
G_debug(3, "Ogr_ftype: %i", Ogr_ftype); /* look up below */
if (i < ncnames - 1) {
Ogr_fieldname = G_store(param.cnames->answers[i + 1]);
}
else {
/* Change column names to [A-Za-z][A-Za-z0-9_]* */
Ogr_fieldname = G_store(OGR_Fld_GetNameRef(Ogr_field));
G_debug(3, "Ogr_fieldname: '%s'", Ogr_fieldname);
G_str_to_sql(Ogr_fieldname);
G_debug(3, "Ogr_fieldname: '%s'", Ogr_fieldname);
}
/* avoid that we get the 'cat' column twice */
if (strcmp(Ogr_fieldname, GV_KEY_COLUMN) == 0) {
sprintf(namebuf, "%s_", Ogr_fieldname);
Ogr_fieldname = G_store(namebuf);
}
/* captial column names are a pain in SQL */
if (flag.tolower->answer)
G_str_to_lower(Ogr_fieldname);
if (strcmp(OGR_Fld_GetNameRef(Ogr_field), Ogr_fieldname) != 0) {
G_warning(_("Column name changed: '%s' -> '%s'"),
OGR_Fld_GetNameRef(Ogr_field), Ogr_fieldname);
}
/** Simple 32bit integer OFTInteger = 0 **/
/** List of 32bit integers OFTIntegerList = 1 **/
/** Double Precision floating point OFTReal = 2 **/
/** List of doubles OFTRealList = 3 **/
/** String of ASCII chars OFTString = 4 **/
/** Array of strings OFTStringList = 5 **/
/** Double byte string (unsupported) OFTWideString = 6 **/
/** List of wide strings (unsupported) OFTWideStringList = 7 **/
/** Raw Binary data (unsupported) OFTBinary = 8 **/
/** OFTDate = 9 **/
/** OFTTime = 10 **/
/** OFTDateTime = 11 **/
if (Ogr_ftype == OFTInteger) {
sprintf(buf, ", %s integer", Ogr_fieldname);
}
else if (Ogr_ftype == OFTIntegerList) {
/* hack: treat as string */
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
OFTIntegerListlength);
G_warning(_("Writing column <%s> with fixed length %d chars (may be truncated)"),
Ogr_fieldname, OFTIntegerListlength);
}
else if (Ogr_ftype == OFTReal) {
sprintf(buf, ", %s double precision", Ogr_fieldname);
#if GDAL_VERSION_NUM >= 1320
}
else if (Ogr_ftype == OFTDate) {
sprintf(buf, ", %s date", Ogr_fieldname);
}
else if (Ogr_ftype == OFTTime) {
sprintf(buf, ", %s time", Ogr_fieldname);
}
else if (Ogr_ftype == OFTDateTime) {
sprintf(buf, ", %s datetime", Ogr_fieldname);
#endif
}
else if (Ogr_ftype == OFTString) {
int fwidth;
fwidth = OGR_Fld_GetWidth(Ogr_field);
/* TODO: read all records first and find the longest string length */
if (fwidth == 0) {
G_warning(_("Width for column %s set to 255 (was not specified by OGR), "
"some strings may be truncated!"),
Ogr_fieldname);
fwidth = 255;
}
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
fwidth);
}
else if (Ogr_ftype == OFTStringList) {
/* hack: treat as string */
sprintf(buf, ", %s varchar ( %d )", Ogr_fieldname,
OFTIntegerListlength);
G_warning(_("Writing column %s with fixed length %d chars (may be truncated)"),
Ogr_fieldname, OFTIntegerListlength);
}
else {
G_warning(_("Column type not supported (%s)"),
Ogr_fieldname);
buf[0] = 0;
}
db_append_string(&sql, buf);
G_free(Ogr_fieldname);
}
db_append_string(&sql, ")");
G_debug(3, db_get_string(&sql));
driver =
db_start_driver_open_database(Fi->driver,
Vect_subst_var(Fi->database,
&Map));
if (driver == NULL) {
G_fatal_error(_("Unable open database <%s> by driver <%s>"),
Vect_subst_var(Fi->database, &Map), Fi->driver);
}
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database(driver);
db_shutdown_driver(driver);
G_fatal_error(_("Unable to create table: '%s'"),
db_get_string(&sql));
}
if (db_create_index2(driver, Fi->table, cat_col_name) != DB_OK)
G_warning(_("Unable to create index for table <%s>, key <%s>"),
Fi->table, cat_col_name);
if (db_grant_on_table
(driver, Fi->table, DB_PRIV_SELECT,
DB_GROUP | DB_PUBLIC) != DB_OK)
G_fatal_error(_("Unable to grant privileges on table <%s>"),
Fi->table);
db_begin_transaction(driver);
}
/* Import feature */
cat = 1;
nogeom = 0;
OGR_L_ResetReading(Ogr_layer);
n_features = feature_count = 0;
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
G_important_message(_("Importing %d features (OGR layer <%s>)..."),
n_features, layer_names[layer]);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
G_percent(feature_count++, n_features, 1); /* show something happens */
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry == NULL) {
nogeom++;
}
else {
dim = OGR_G_GetCoordinateDimension(Ogr_geometry);
if (dim > 2)
with_z = 1;
geom(Ogr_geometry, Out, layer + 1, cat, min_area, type,
flag.no_clean->answer);
}
/* Attributes */
if (!flag.notab->answer) {
sprintf(buf, "insert into %s values ( %d", Fi->table, cat);
db_set_string(&sql, buf);
for (i = 0; i < ncols; i++) {
Ogr_field = OGR_FD_GetFieldDefn(Ogr_featuredefn, i);
Ogr_ftype = OGR_Fld_GetType(Ogr_field);
if (OGR_F_IsFieldSet(Ogr_feature, i)) {
if (Ogr_ftype == OFTInteger || Ogr_ftype == OFTReal) {
sprintf(buf, ", %s",
OGR_F_GetFieldAsString(Ogr_feature, i));
#if GDAL_VERSION_NUM >= 1320
/* should we use OGR_F_GetFieldAsDateTime() here ? */
}
else if (Ogr_ftype == OFTDate || Ogr_ftype == OFTTime
|| Ogr_ftype == OFTDateTime) {
char *newbuf;
db_set_string(&strval, (char *)
OGR_F_GetFieldAsString(Ogr_feature,
i));
db_double_quote_string(&strval);
sprintf(buf, ", '%s'", db_get_string(&strval));
newbuf = G_str_replace(buf, "/", "-"); /* fix 2001/10/21 to 2001-10-21 */
sprintf(buf, "%s", newbuf);
#endif
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList) {
db_set_string(&strval, (char *)
OGR_F_GetFieldAsString(Ogr_feature,
i));
db_double_quote_string(&strval);
sprintf(buf, ", '%s'", db_get_string(&strval));
}
}
else {
/* G_warning (_("Column value not set" )); */
if (Ogr_ftype == OFTInteger || Ogr_ftype == OFTReal) {
sprintf(buf, ", NULL");
#if GDAL_VERSION_NUM >= 1320
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList ||
Ogr_ftype == OFTDate) {
#else
}
else if (Ogr_ftype == OFTString ||
Ogr_ftype == OFTIntegerList) {
#endif
sprintf(buf, ", ''");
}
}
db_append_string(&sql, buf);
}
db_append_string(&sql, " )");
G_debug(3, db_get_string(&sql));
if (db_execute_immediate(driver, &sql) != DB_OK) {
db_close_database(driver);
db_shutdown_driver(driver);
G_fatal_error(_("Cannot insert new row: %s"),
db_get_string(&sql));
}
}
OGR_F_Destroy(Ogr_feature);
cat++;
}
G_percent(1, 1, 1); /* finish it */
if (!flag.notab->answer) {
db_commit_transaction(driver);
db_close_database_shutdown_driver(driver);
}
if (nogeom > 0)
G_warning(_("%d %s without geometry"), nogeom,
nogeom == 1 ? "feature" : "features");
}
separator = "-----------------------------------------------------";
G_message("%s", separator);
if (use_tmp_vect) {
/* TODO: is it necessary to build here? probably not, consumes time */
/* GV_BUILD_BASE is sufficient to toggle boundary cleaning */
Vect_build_partial(&Tmp, GV_BUILD_BASE);
}
if (use_tmp_vect && !flag.no_clean->answer &&
Vect_get_num_primitives(Out, GV_BOUNDARY) > 0) {
int ret, centr, ncentr, otype, n_overlaps, n_nocat;
CENTR *Centr;
struct spatial_index si;
double x, y, total_area, overlap_area, nocat_area;
struct bound_box box;
struct line_pnts *Points;
int nmodif;
Points = Vect_new_line_struct();
G_message("%s", separator);
G_warning(_("Cleaning polygons, result is not guaranteed!"));
if (snap >= 0) {
G_message("%s", separator);
G_message(_("Snapping boundaries (threshold = %.3e)..."), snap);
Vect_snap_lines(&Tmp, GV_BOUNDARY, snap, NULL);
}
/* It is not to clean to snap centroids, but I have seen data with 2 duplicate polygons
* (as far as decimal places were printed) and centroids were not identical */
/* Disabled, because overlapping polygons result in many duplicate centroids anyway */
/*
fprintf ( stderr, separator );
fprintf ( stderr, "Snap centroids (threshold 0.000001):\n" );
Vect_snap_lines ( &Map, GV_CENTROID, 0.000001, NULL, stderr );
*/
G_message("%s", separator);
G_message(_("Breaking polygons..."));
Vect_break_polygons(&Tmp, GV_BOUNDARY, NULL);
/* It is important to remove also duplicate centroids in case of duplicate input polygons */
G_message("%s", separator);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Tmp, GV_BOUNDARY | GV_CENTROID, NULL);
/* in non-pathological cases, the bulk of the cleaning is now done */
/* Vect_clean_small_angles_at_nodes() can change the geometry so that new intersections
* are created. We must call Vect_break_lines(), Vect_remove_duplicates()
* and Vect_clean_small_angles_at_nodes() until no more small angles are found */
do {
G_message("%s", separator);
G_message(_("Breaking boundaries..."));
Vect_break_lines(&Tmp, GV_BOUNDARY, NULL);
G_message("%s", separator);
G_message(_("Removing duplicates..."));
Vect_remove_duplicates(&Tmp, GV_BOUNDARY, NULL);
G_message("%s", separator);
G_message(_("Cleaning boundaries at nodes..."));
nmodif =
Vect_clean_small_angles_at_nodes(&Tmp, GV_BOUNDARY, NULL);
} while (nmodif > 0);
/* merge boundaries */
G_message("%s", separator);
G_message(_("Merging boundaries..."));
Vect_merge_lines(&Tmp, GV_BOUNDARY, NULL, NULL);
G_message("%s", separator);
if (type & GV_BOUNDARY) { /* that means lines were converted to boundaries */
G_message(_("Changing boundary dangles to lines..."));
Vect_chtype_dangles(&Tmp, -1.0, NULL);
}
else {
G_message(_("Removing dangles..."));
Vect_remove_dangles(&Tmp, GV_BOUNDARY, -1.0, NULL);
}
G_message("%s", separator);
if (type & GV_BOUNDARY) {
G_message(_("Changing boundary bridges to lines..."));
Vect_chtype_bridges(&Tmp, NULL);
}
else {
G_message(_("Removing bridges..."));
Vect_remove_bridges(&Tmp, NULL);
}
/* Boundaries are hopefully clean, build areas */
G_message("%s", separator);
Vect_build_partial(&Tmp, GV_BUILD_ATTACH_ISLES);
/* Calculate new centroids for all areas, centroids have the same id as area */
ncentr = Vect_get_num_areas(&Tmp);
G_debug(3, "%d centroids/areas", ncentr);
Centr = (CENTR *) G_calloc(ncentr + 1, sizeof(CENTR));
Vect_spatial_index_init(&si, 0);
for (centr = 1; centr <= ncentr; centr++) {
Centr[centr].valid = 0;
Centr[centr].cats = Vect_new_cats_struct();
ret = Vect_get_point_in_area(&Tmp, centr, &x, &y);
if (ret < 0) {
G_warning(_("Unable to calculate area centroid"));
continue;
}
Centr[centr].x = x;
Centr[centr].y = y;
Centr[centr].valid = 1;
box.N = box.S = y;
box.E = box.W = x;
box.T = box.B = 0;
Vect_spatial_index_add_item(&si, centr, &box);
}
/* Go through all layers and find centroids for each polygon */
for (layer = 0; layer < nlayers; layer++) {
G_message("%s", separator);
G_message(_("Finding centroids for OGR layer <%s>..."), layer_names[layer]);
layer_id = layers[layer];
Ogr_layer = OGR_DS_GetLayer(Ogr_ds, layer_id);
n_features = OGR_L_GetFeatureCount(Ogr_layer, 1);
OGR_L_ResetReading(Ogr_layer);
cat = 0; /* field = layer + 1 */
G_percent(cat, n_features, 2);
while ((Ogr_feature = OGR_L_GetNextFeature(Ogr_layer)) != NULL) {
cat++;
G_percent(cat, n_features, 2);
/* Geometry */
Ogr_geometry = OGR_F_GetGeometryRef(Ogr_feature);
if (Ogr_geometry != NULL) {
centroid(Ogr_geometry, Centr, &si, layer + 1, cat,
min_area, type);
}
OGR_F_Destroy(Ogr_feature);
}
}
/* Write centroids */
G_message("%s", separator);
G_message(_("Writing centroids..."));
n_overlaps = n_nocat = 0;
total_area = overlap_area = nocat_area = 0.0;
for (centr = 1; centr <= ncentr; centr++) {
double area;
G_percent(centr, ncentr, 2);
area = Vect_get_area_area(&Tmp, centr);
total_area += area;
if (!(Centr[centr].valid)) {
continue;
}
if (Centr[centr].cats->n_cats == 0) {
nocat_area += area;
n_nocat++;
continue;
}
if (Centr[centr].cats->n_cats > 1) {
Vect_cat_set(Centr[centr].cats, nlayers + 1,
Centr[centr].cats->n_cats);
overlap_area += area;
n_overlaps++;
}
Vect_reset_line(Points);
Vect_append_point(Points, Centr[centr].x, Centr[centr].y, 0.0);
if (type & GV_POINT)
otype = GV_POINT;
else
otype = GV_CENTROID;
Vect_write_line(&Tmp, otype, Points, Centr[centr].cats);
}
if (Centr)
G_free(Centr);
Vect_spatial_index_destroy(&si);
if (n_overlaps > 0) {
G_warning(_("%d areas represent more (overlapping) features, because polygons overlap "
"in input layer(s). Such areas are linked to more than 1 row in attribute table. "
"The number of features for those areas is stored as category in layer %d"),
n_overlaps, nlayers + 1);
}
G_message("%s", separator);
Vect_hist_write(&Map, separator);
Vect_hist_write(&Map, "\n");
sprintf(buf, _("%d input polygons\n"), n_polygons);
G_message(_("%d input polygons"), n_polygons);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Total area: %G (%d areas)\n"), total_area, ncentr);
G_message(_("Total area: %G (%d areas)"), total_area, ncentr);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Overlapping area: %G (%d areas)\n"), overlap_area,
n_overlaps);
G_message(_("Overlapping area: %G (%d areas)"), overlap_area,
n_overlaps);
Vect_hist_write(&Map, buf);
sprintf(buf, _("Area without category: %G (%d areas)\n"), nocat_area,
n_nocat);
G_message(_("Area without category: %G (%d areas)"), nocat_area,
n_nocat);
Vect_hist_write(&Map, buf);
G_message("%s", separator);
}
/* needed?
* OGR_DS_Destroy( Ogr_ds );
*/
if (use_tmp_vect) {
/* Copy temporary vector to output vector */
Vect_copy_map_lines(&Tmp, &Map);
/* release memory occupied by topo, we may need that memory for main output */
Vect_set_release_support(&Tmp);
Vect_close(&Tmp);
Vect_delete(tempvect);
}
Vect_build(&Map);
Vect_close(&Map);
/* -------------------------------------------------------------------- */
/* Extend current window based on dataset. */
/* -------------------------------------------------------------------- */
if (flag.extend->answer) {
G_get_default_window(&loc_wind);
loc_wind.north = MAX(loc_wind.north, cellhd.north);
loc_wind.south = MIN(loc_wind.south, cellhd.south);
loc_wind.west = MIN(loc_wind.west, cellhd.west);
loc_wind.east = MAX(loc_wind.east, cellhd.east);
loc_wind.rows = (int)ceil((loc_wind.north - loc_wind.south)
/ loc_wind.ns_res);
loc_wind.south = loc_wind.north - loc_wind.rows * loc_wind.ns_res;
loc_wind.cols = (int)ceil((loc_wind.east - loc_wind.west)
/ loc_wind.ew_res);
loc_wind.east = loc_wind.west + loc_wind.cols * loc_wind.ew_res;
G__put_window(&loc_wind, "../PERMANENT", "DEFAULT_WIND");
}
if (with_z && !flag.z->answer)
G_warning(_("Input data contains 3D features. Created vector is 2D only, "
"use -z flag to import 3D vector."));
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
int i, cat, with_z, more, ctype, nrows;
char buf[DB_SQL_MAX];
int count;
double coor[3];
int ncoor;
struct Option *driver_opt, *database_opt, *table_opt;
struct Option *xcol_opt, *ycol_opt, *zcol_opt, *keycol_opt, *where_opt,
*outvect;
struct Flag *same_table_flag;
struct GModule *module;
struct Map_info Map;
struct line_pnts *Points;
struct line_cats *Cats;
dbString sql;
dbDriver *driver;
dbCursor cursor;
dbTable *table;
dbColumn *column;
dbValue *value;
struct field_info *fi;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("vector"));
G_add_keyword(_("import"));
G_add_keyword(_("database"));
G_add_keyword(_("points"));
module->description =
_("Creates new vector (points) map from database table containing coordinates.");
table_opt = G_define_standard_option(G_OPT_DB_TABLE);
table_opt->required = YES;
table_opt->description = _("Input table name");
driver_opt = G_define_standard_option(G_OPT_DB_DRIVER);
driver_opt->options = db_list_drivers();
driver_opt->answer = (char *)db_get_default_driver_name();
driver_opt->guisection = _("Input DB");
database_opt = G_define_standard_option(G_OPT_DB_DATABASE);
database_opt->answer = (char *)db_get_default_database_name();
database_opt->guisection = _("Input DB");
xcol_opt = G_define_standard_option(G_OPT_DB_COLUMN);
xcol_opt->key = "x";
xcol_opt->required = YES;
xcol_opt->description = _("Name of column containing x coordinate");
ycol_opt = G_define_standard_option(G_OPT_DB_COLUMN);
ycol_opt->key = "y";
ycol_opt->required = YES;
ycol_opt->description = _("Name of column containing y coordinate");
zcol_opt = G_define_standard_option(G_OPT_DB_COLUMN);
zcol_opt->key = "z";
zcol_opt->description = _("Name of column containing z coordinate");
zcol_opt->guisection = _("3D output");
keycol_opt = G_define_standard_option(G_OPT_DB_COLUMN);
keycol_opt->key = "key";
keycol_opt->required = NO;
keycol_opt->label = _("Name of column containing category number");
keycol_opt->description = _("Must refer to an integer column");
where_opt = G_define_standard_option(G_OPT_DB_WHERE);
where_opt->guisection = _("Selection");
outvect = G_define_standard_option(G_OPT_V_OUTPUT);
same_table_flag = G_define_flag();
same_table_flag->key = 't';
same_table_flag->description =
_("Use imported table as attribute table for new map");
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
if (zcol_opt->answer) {
with_z = WITH_Z;
ncoor = 3;
}
else {
with_z = WITHOUT_Z;
ncoor = 2;
}
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
db_init_string(&sql);
if (G_get_overwrite()) {
/* We don't want to delete the input table when overwriting the output
* vector. */
char name[GNAME_MAX], mapset[GMAPSET_MAX];
if (!G_name_is_fully_qualified(outvect->answer, name, mapset)) {
strcpy(name, outvect->answer);
strcpy(mapset, G_mapset());
}
Vect_set_open_level(1); /* no topo needed */
if (strcmp(mapset, G_mapset()) == 0 && G_find_vector2(name, mapset) &&
Vect_open_old(&Map, name, mapset) >= 0) {
int num_dblinks;
num_dblinks = Vect_get_num_dblinks(&Map);
for (i = 0; i < num_dblinks; i++) {
if ((fi = Vect_get_dblink(&Map, i)) != NULL &&
strcmp(fi->driver, driver_opt->answer) == 0 &&
strcmp(fi->database, database_opt->answer) == 0 &&
strcmp(fi->table, table_opt->answer) == 0)
G_fatal_error(_("Vector map <%s> cannot be overwritten "
"because input table <%s> is linked to "
"this map."),
outvect->answer, table_opt->answer);
}
Vect_close(&Map);
}
}
if (Vect_open_new(&Map, outvect->answer, with_z) < 0)
G_fatal_error(_("Unable to create vector map <%s>"),
outvect->answer);
Vect_set_error_handler_io(NULL, &Map);
Vect_hist_command(&Map);
fi = Vect_default_field_info(&Map, 1, NULL, GV_1TABLE);
/* Open driver */
driver = db_start_driver_open_database(driver_opt->answer,
database_opt->answer);
if (driver == NULL) {
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
fi->database, fi->driver);
}
db_set_error_handler_driver(driver);
/* check if target table already exists */
G_debug(3, "Output vector table <%s>, driver: <%s>, database: <%s>",
outvect->answer, db_get_default_driver_name(),
db_get_default_database_name());
if (!same_table_flag->answer &&
db_table_exists(db_get_default_driver_name(),
db_get_default_database_name(), outvect->answer) == 1)
G_fatal_error(_("Output vector map, table <%s> (driver: <%s>, database: <%s>) "
"already exists"), outvect->answer,
db_get_default_driver_name(),
db_get_default_database_name());
if (keycol_opt->answer) {
int coltype;
coltype = db_column_Ctype(driver, table_opt->answer, keycol_opt->answer);
if (coltype == -1)
G_fatal_error(_("Column <%s> not found in table <%s>"),
keycol_opt->answer, table_opt->answer);
if (coltype != DB_C_TYPE_INT)
G_fatal_error(_("Data type of key column must be integer"));
}
else {
if (same_table_flag->answer) {
G_fatal_error(_("Option <%s> must be specified when -%c flag is given"),
keycol_opt->key, same_table_flag->key);
}
if (strcmp(db_get_default_driver_name(), "sqlite") != 0)
G_fatal_error(_("Unable to define key column. This operation is not supported "
"by <%s> driver. You need to define <%s> option."),
fi->driver, keycol_opt->key);
}
/* Open select cursor */
sprintf(buf, "SELECT %s, %s", xcol_opt->answer, ycol_opt->answer);
db_set_string(&sql, buf);
if (with_z) {
sprintf(buf, ", %s", zcol_opt->answer);
db_append_string(&sql, buf);
}
if (keycol_opt->answer) {
sprintf(buf, ", %s", keycol_opt->answer);
db_append_string(&sql, buf);
}
sprintf(buf, " FROM %s", table_opt->answer);
db_append_string(&sql, buf);
if (where_opt->answer) {
sprintf(buf, " WHERE %s", where_opt->answer);
db_append_string(&sql, buf);
}
G_debug(2, "SQL: %s", db_get_string(&sql));
if (db_open_select_cursor(driver, &sql, &cursor, DB_SEQUENTIAL) != DB_OK) {
G_fatal_error(_("Unable to open select cursor: '%s'"),
db_get_string(&sql));
}
table = db_get_cursor_table(&cursor);
nrows = db_get_num_rows(&cursor);
G_debug(2, "%d points selected", nrows);
count = cat = 0;
G_message(_("Writing features..."));
while (db_fetch(&cursor, DB_NEXT, &more) == DB_OK && more) {
G_percent(count, nrows, 2);
/* key column */
if (keycol_opt->answer) {
column = db_get_table_column(table, with_z ? 3 : 2);
ctype = db_sqltype_to_Ctype(db_get_column_sqltype(column));
if (ctype != DB_C_TYPE_INT)
G_fatal_error(_("Key column must be integer"));
value = db_get_column_value(column);
cat = db_get_value_int(value);
}
else {
cat++;
}
/* coordinates */
for (i = 0; i < ncoor; i++) {
column = db_get_table_column(table, i);
ctype = db_sqltype_to_Ctype(db_get_column_sqltype(column));
if (ctype != DB_C_TYPE_INT && ctype != DB_C_TYPE_DOUBLE)
G_fatal_error(_("x/y/z column must be integer or double"));
value = db_get_column_value(column);
if (ctype == DB_C_TYPE_INT)
coor[i] = (double)db_get_value_int(value);
else
coor[i] = db_get_value_double(value);
}
Vect_reset_line(Points);
Vect_reset_cats(Cats);
Vect_append_point(Points, coor[0], coor[1], coor[2]);
Vect_cat_set(Cats, 1, cat);
Vect_write_line(&Map, GV_POINT, Points, Cats);
count++;
}
G_percent(1, 1, 1);
/* close connection to input DB before copying attributes */
db_close_database_shutdown_driver(driver);
/* Copy table */
if (!same_table_flag->answer) {
G_message(_("Copying attributes..."));
if (DB_FAILED == db_copy_table_where(driver_opt->answer, database_opt->answer,
table_opt->answer,
fi->driver, fi->database, fi->table,
where_opt->answer)) { /* where can be NULL */
G_warning(_("Unable to copy table"));
}
else {
Vect_map_add_dblink(&Map, 1, NULL, fi->table,
keycol_opt->answer ? keycol_opt->answer : GV_KEY_COLUMN,
fi->database, fi->driver);
}
if (!keycol_opt->answer) {
/* TODO: implement for all DB drivers in generic way if
* possible */
driver = db_start_driver_open_database(fi->driver, fi->database);
if (driver == NULL) {
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
fi->database, fi->driver);
}
db_set_error_handler_driver(driver);
/* add key column */
sprintf(buf, "ALTER TABLE %s ADD COLUMN %s INTEGER",
fi->table, GV_KEY_COLUMN);
db_set_string(&sql, buf);
if (db_execute_immediate(driver, &sql) != DB_OK) {
G_fatal_error(_("Unable to add key column <%s>: "
"SERIAL type is not supported by <%s>"),
GV_KEY_COLUMN, fi->driver);
}
/* update key column */
sprintf(buf, "UPDATE %s SET %s = _ROWID_",
fi->table, GV_KEY_COLUMN);
db_set_string(&sql, buf);
if (db_execute_immediate(driver, &sql) != DB_OK) {
G_fatal_error(_("Failed to update key column <%s>"),
GV_KEY_COLUMN);
}
}
}
else {
/* do not copy attributes, link original table */
Vect_map_add_dblink(&Map, 1, NULL, table_opt->answer,
keycol_opt->answer ? keycol_opt->answer : GV_KEY_COLUMN,
database_opt->answer, driver_opt->answer);
}
Vect_build(&Map);
Vect_close(&Map);
G_done_msg(_n("%d point written to vector map.",
"%d points written to vector map.",
count), count);
return (EXIT_SUCCESS);
}
int display_attr(struct Map_info *Map, int type, char *attrcol,
struct cat_list *Clist, LATTR *lattr, int chcat)
{
int i, ltype, more;
struct line_pnts *Points;
struct line_cats *Cats;
int cat;
char buf[2000];
struct field_info *fi;
dbDriver *driver;
dbString stmt, valstr, text;
dbCursor cursor;
dbTable *table;
dbColumn *column;
G_debug(2, "attr()");
if (attrcol == NULL || *attrcol == '\0') {
G_fatal_error(_("attrcol not specified, cannot display attributes"));
}
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
db_init_string(&stmt);
db_init_string(&valstr);
db_init_string(&text);
fi = Vect_get_field(Map, lattr->field);
if (fi == NULL)
return 1;
driver = db_start_driver_open_database(fi->driver, fi->database);
if (driver == NULL)
G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
fi->database,
fi->driver);
Vect_rewind(Map);
while (1) {
ltype = Vect_read_next_line(Map, Points, Cats);
if (ltype == -1)
G_fatal_error(_("Unable to read vector map"));
else if (ltype == -2) /* EOF */
break;
if (!(type & ltype) && !((type & GV_AREA) && (ltype & GV_CENTROID)))
continue; /* used for both lines and labels */
D_RGB_color(lattr->color.R, lattr->color.G, lattr->color.B);
D_text_size(lattr->size, lattr->size);
if (lattr->font)
D_font(lattr->font);
if (lattr->enc)
D_encoding(lattr->enc);
if (chcat) {
int found = 0;
for (i = 0; i < Cats->n_cats; i++) {
if (Cats->field[i] == Clist->field &&
Vect_cat_in_cat_list(Cats->cat[i], Clist)) {
found = 1;
break;
}
}
if (!found)
continue;
}
else if (Clist->field > 0) {
int found = 0;
for (i = 0; i < Cats->n_cats; i++) {
if (Cats->field[i] == Clist->field) {
found = 1;
break;
}
}
/* lines with no category will be displayed */
if (Cats->n_cats > 0 && !found)
continue;
}
if (Vect_cat_get(Cats, lattr->field, &cat)) {
int ncats = 0;
/* Read attribute from db */
db_free_string(&text);
for (i = 0; i < Cats->n_cats; i++) {
int nrows;
if (Cats->field[i] != lattr->field)
continue;
db_init_string(&stmt);
sprintf(buf, "select %s from %s where %s = %d", attrcol,
fi->table, fi->key, Cats->cat[i]);
G_debug(2, "SQL: %s", buf);
db_append_string(&stmt, buf);
if (db_open_select_cursor
(driver, &stmt, &cursor, DB_SEQUENTIAL) != DB_OK)
G_fatal_error(_("Unable to open select cursor: '%s'"),
db_get_string(&stmt));
nrows = db_get_num_rows(&cursor);
if (ncats > 0)
db_append_string(&text, "/");
if (nrows > 0) {
table = db_get_cursor_table(&cursor);
column = db_get_table_column(table, 0); /* first column */
if (db_fetch(&cursor, DB_NEXT, &more) != DB_OK)
continue;
db_convert_column_value_to_string(column, &valstr);
db_append_string(&text, db_get_string(&valstr));
}
else {
G_warning(_("No attribute found for cat %d: %s"), cat,
db_get_string(&stmt));
}
db_close_cursor(&cursor);
ncats++;
}
show_label_line(Points, ltype, lattr, db_get_string(&text));
}
}
db_close_database_shutdown_driver(driver);
Vect_destroy_line_struct(Points);
Vect_destroy_cats_struct(Cats);
return 0;
}
void QgsGrassVectorMapLayer::load()
{
clear();
if ( !mMap )
{
return;
}
// Attributes are not loaded for topo layers in which case field == 0
if ( mField == 0 )
{
return;
}
QgsDebugMsg( QString( "cidxFieldIndex() = %1 cidxFieldNumCats() = %2" ).arg( cidxFieldIndex() ).arg( cidxFieldNumCats() ) );
mFieldInfo = Vect_get_field( mMap->map(), mField ); // should work also with field = 0
if ( !mFieldInfo )
{
QgsDebugMsg( "No field info -> no attribute table" );
}
else
{
QgsDebugMsg( "Field info found -> open database" );
QFileInfo di( mMap->grassObject().mapsetPath() + "/vector/" + mMap->grassObject().name() + "/dbln" );
mLastLoaded = di.lastModified();
QString error;
dbDriver *databaseDriver = openDriver( error );
if ( !databaseDriver || !error.isEmpty() )
{
QgsDebugMsg( error );
}
else
{
QgsDebugMsg( "Database opened -> open select cursor" );
QgsGrass::lock(); // not sure if lock is necessary
dbString dbstr;
db_init_string( &dbstr );
db_set_string( &dbstr, ( char * )"select * from " );
db_append_string( &dbstr, mFieldInfo->table );
QgsDebugMsg( QString( "SQL: %1" ).arg( db_get_string( &dbstr ) ) );
dbCursor databaseCursor;
if ( db_open_select_cursor( databaseDriver, &dbstr, &databaseCursor, DB_SCROLL ) != DB_OK )
{
db_close_database_shutdown_driver( databaseDriver );
QgsGrass::warning( "Cannot select attributes from table '" + QString( mFieldInfo->table ) + "'" );
}
else
{
#ifdef QGISDEBUG
int nRecords = db_get_num_rows( &databaseCursor );
QgsDebugMsg( QString( "Number of records: %1" ).arg( nRecords ) );
#endif
dbTable *databaseTable = db_get_cursor_table( &databaseCursor );
int nColumns = db_get_table_number_of_columns( databaseTable );
// Read columns' description
for ( int i = 0; i < nColumns; i++ )
{
QPair<double, double> minMax( DBL_MAX, -DBL_MAX );
dbColumn *column = db_get_table_column( databaseTable, i );
int ctype = db_sqltype_to_Ctype( db_get_column_sqltype( column ) );
QVariant::Type qtype = QVariant::String; //default to string
QgsDebugMsg( QString( "column = %1 ctype = %2" ).arg( db_get_column_name( column ) ).arg( ctype ) );
QString ctypeStr;
switch ( ctype )
{
case DB_C_TYPE_INT:
ctypeStr = QStringLiteral( "integer" );
qtype = QVariant::Int;
break;
case DB_C_TYPE_DOUBLE:
ctypeStr = QStringLiteral( "double" );
qtype = QVariant::Double;
break;
case DB_C_TYPE_STRING:
ctypeStr = QStringLiteral( "string" );
qtype = QVariant::String;
break;
case DB_C_TYPE_DATETIME:
ctypeStr = QStringLiteral( "datetime" );
qtype = QVariant::String;
break;
}
mTableFields.append( QgsField( db_get_column_name( column ), qtype, ctypeStr,
db_get_column_length( column ), db_get_column_precision( column ) ) );
mMinMax << minMax;
if ( G_strcasecmp( db_get_column_name( column ), mFieldInfo->key ) == 0 )
{
mKeyColumn = i;
}
}
if ( mKeyColumn < 0 )
{
mTableFields.clear();
QgsGrass::warning( QObject::tr( "Key column '%1' not found in the table '%2'" ).arg( mFieldInfo->key, mFieldInfo->table ) );
}
else
{
mHasTable = true;
// Read attributes to the memory
for ( ;; )
{
int more;
if ( db_fetch( &databaseCursor, DB_NEXT, &more ) != DB_OK )
{
QgsDebugMsg( "Cannot fetch DB record" );
break;
}
if ( !more )
{
break; // no more records
}
// Check cat value
dbColumn *column = db_get_table_column( databaseTable, mKeyColumn );
dbValue *value = db_get_column_value( column );
if ( db_test_value_isnull( value ) )
{
continue;
}
int cat = db_get_value_int( value );
if ( cat < 0 )
{
continue;
}
QList<QVariant> values;
for ( int i = 0; i < nColumns; i++ )
{
column = db_get_table_column( databaseTable, i );
int sqltype = db_get_column_sqltype( column );
int ctype = db_sqltype_to_Ctype( sqltype );
value = db_get_column_value( column );
db_convert_value_to_string( value, sqltype, &dbstr );
QgsDebugMsgLevel( QString( "column = %1 value = %2" ).arg( db_get_column_name( column ), db_get_string( &dbstr ) ), 3 );
QVariant variant;
if ( !db_test_value_isnull( value ) )
{
int iv;
double dv;
//layer.mAttributes[layer.nAttributes].values[i] = strdup( db_get_string( &dbstr ) );
switch ( ctype )
{
case DB_C_TYPE_INT:
iv = db_get_value_int( value );
variant = QVariant( iv );
mMinMax[i].first = std::min( mMinMax[i].first, ( double )iv );
mMinMax[i].second = std::min( mMinMax[i].second, ( double )iv );
break;
case DB_C_TYPE_DOUBLE:
dv = db_get_value_double( value );
variant = QVariant( dv );
mMinMax[i].first = std::min( mMinMax[i].first, dv );
mMinMax[i].second = std::min( mMinMax[i].second, dv );
break;
case DB_C_TYPE_STRING:
// Store as byte array so that codec may be used later
variant = QVariant( QByteArray( db_get_value_string( value ) ) );
break;
case DB_C_TYPE_DATETIME:
variant = QVariant( QByteArray( db_get_string( &dbstr ) ) );
break;
default:
variant = QVariant( QByteArray( db_get_string( &dbstr ) ) );
}
}
QgsDebugMsgLevel( QString( "column = %1 variant = %2" ).arg( db_get_column_name( column ), variant.toString() ), 3 );
values << variant;
}
mAttributes.insert( cat, values );
}
}
mValid = true;
db_close_cursor( &databaseCursor );
db_close_database_shutdown_driver( databaseDriver );
db_free_string( &dbstr );
QgsDebugMsg( QString( "mTableFields.size = %1" ).arg( mTableFields.size() ) );
QgsDebugMsg( QString( "number of attributes = %1" ).arg( mAttributes.size() ) );
}
QgsGrass::unlock();
}
}
// Add cat if no attribute fields exist (otherwise qgis crashes)
if ( mTableFields.size() == 0 )
{
mKeyColumn = 0;
mTableFields.append( QgsField( QStringLiteral( "cat" ), QVariant::Int, QStringLiteral( "integer" ) ) );
QPair<double, double> minMax( 0, 0 );
if ( cidxFieldIndex() >= 0 )
{
int ncats, cat, type, id;
ncats = Vect_cidx_get_num_cats_by_index( mMap->map(), cidxFieldIndex() );
if ( ncats > 0 )
{
Vect_cidx_get_cat_by_index( mMap->map(), cidxFieldIndex(), 0, &cat, &type, &id );
minMax.first = cat;
Vect_cidx_get_cat_by_index( mMap->map(), cidxFieldIndex(), ncats - 1, &cat, &type, &id );
minMax.second = cat;
}
}
mMinMax << minMax;
}
mFields = mTableFields;
mAttributeFields = mTableFields;
QgsDebugMsg( QString( "layer loaded mTableFields.size() = %1 mAttributes.size() = %2" ).arg( mTableFields.size() ).arg( mAttributes.size() ) );
mValid = true;
}
/* append error message */
void append_error(const char *msg)
{
db_append_string(errMsg, msg);
}
int line_area(struct Map_info *In, int *field, struct Map_info *Tmp,
struct Map_info *Out, struct field_info *Fi,
dbDriver * driver, int operator, int *ofield,
ATTRIBUTES * attr, struct ilist *BList)
{
int line, nlines, ncat;
struct line_pnts *Points;
struct line_cats *Cats, *ACats, *OCats;
char buf[1000];
dbString stmt;
Points = Vect_new_line_struct();
Cats = Vect_new_cats_struct();
ACats = Vect_new_cats_struct();
OCats = Vect_new_cats_struct();
db_init_string(&stmt);
G_message(_("Breaking lines..."));
Vect_break_lines_list(Tmp, NULL, BList, GV_LINE | GV_BOUNDARY, NULL);
/*
G_message(_("Merging lines..."));
Vect_merge_lines(Tmp, GV_LINE, NULL, NULL);
*/
nlines = Vect_get_num_lines(Tmp);
/* Warning!: cleaning process (break) creates new vertices which are usually slightly
* moved (RE), to compare such new vertex with original input is a problem?
*
* TODO?: would it be better to copy centroids also and query output map?
*/
/* Check if the line is inside or outside binput area */
G_message(_("Selecting lines..."));
ncat = 1;
for (line = 1; line <= nlines; line++) {
int ltype;
G_percent(line, nlines, 1); /* must be before any continue */
if (!Vect_line_alive(Tmp, line))
continue;
ltype = Vect_get_line_type(Tmp, line);
if (ltype == GV_BOUNDARY) { /* No more needed */
continue;
}
/* Now the type should be only GV_LINE */
/* Decide if the line is inside or outside the area. In theory:
* 1) All vertices outside
* - easy, first vertex must be outside
* 2) All vertices inside
* 3) All vertices on the boundary, we take it as inside (attention,
* result of Vect_point_in_area() for points on segments between vertices may be both
* inside or outside, because of representation of numbers)
* 4) One or two end vertices on the boundary, all others outside
* 5) One or two end vertices on the boundary, all others inside
*
*/
/* Note/TODO: the test done is quite simple, check the point in the middle of segment.
* If the line overlaps the boundary, the result may be both outside and inside
* this should be solved (check angles?)
* This should not happen if Vect_break_lines_list() works correctly
*/
/* merge here */
merge_line(Tmp, line, Points, Cats);
G_debug(3, "line = %d", line);
point_area(&(In[1]), field[1], (Points->x[0] + Points->x[1]) / 2,
(Points->y[0] + Points->y[1]) / 2, ACats);
if ((ACats->n_cats > 0 && operator == OP_AND) ||
(ACats->n_cats == 0 && operator == OP_NOT)) {
int i;
/* Point is inside */
G_debug(3, "OK, write line, line ncats = %d area ncats = %d",
Cats->n_cats, ACats->n_cats);
Vect_reset_cats(OCats);
if (ofield[0] > 0) {
/* rewrite with all combinations of acat - bcat (-1 in cycle for null) */
for (i = -1; i < Cats->n_cats; i++) { /* line cats */
int j;
if (i == -1 && Cats->n_cats > 0)
continue; /* no need to make null */
for (j = -1; j < ACats->n_cats; j++) {
if (j == -1 && ACats->n_cats > 0)
continue; /* no need to make null */
if (ofield[0] > 0)
Vect_cat_set(OCats, ofield[0], ncat);
/* Attributes */
if (driver) {
ATTR *at;
sprintf(buf, "insert into %s values ( %d", Fi->table,
ncat);
db_set_string(&stmt, buf);
/* cata */
if (i >= 0) {
if (attr[0].columns) {
at = find_attr(&(attr[0]), Cats->cat[i]);
if (!at)
G_fatal_error(_("Attribute not found"));
if (at->values)
db_append_string(&stmt, at->values);
else
db_append_string(&stmt,
attr[0].null_values);
}
else {
sprintf(buf, ", %d", Cats->cat[i]);
db_append_string(&stmt, buf);
}
}
else {
if (attr[0].columns) {
db_append_string(&stmt, attr[0].null_values);
}
else {
sprintf(buf, ", null");
db_append_string(&stmt, buf);
}
}
/* catb */
if (j >= 0) {
if (attr[1].columns) {
at = find_attr(&(attr[1]), ACats->cat[j]);
if (!at)
G_fatal_error(_("Attribute not found"));
if (at->values)
db_append_string(&stmt, at->values);
else
db_append_string(&stmt,
attr[1].null_values);
}
else {
sprintf(buf, ", %d", ACats->cat[j]);
db_append_string(&stmt, buf);
}
}
else {
if (attr[1].columns) {
db_append_string(&stmt, attr[1].null_values);
}
else {
sprintf(buf, ", null");
db_append_string(&stmt, buf);
}
}
db_append_string(&stmt, " )");
G_debug(3, "%s", db_get_string(&stmt));
if (db_execute_immediate(driver, &stmt) != DB_OK)
G_warning(_("Unable to insert new record: '%s'"),
db_get_string(&stmt));
}
ncat++;
}
}
}
/* Add cats from input vectors */
if (ofield[1] > 0 && field[0] > 0) {
for (i = 0; i < Cats->n_cats; i++) {
if (Cats->field[i] == field[0])
Vect_cat_set(OCats, ofield[1], Cats->cat[i]);
}
}
if (ofield[2] > 0 && field[1] > 0 && ofield[1] != ofield[2]) {
for (i = 0; i < ACats->n_cats; i++) {
if (ACats->field[i] == field[1])
Vect_cat_set(OCats, ofield[2], ACats->cat[i]);
}
}
Vect_write_line(Out, ltype, Points, OCats);
}
}
return 0;
}
void report_error(void)
{
db_append_string(errMsg, "\n");
db_error(db_get_string(errMsg));
}