static GhtErr
l2g_read_projection(const Las2GhtConfig *config, Las2GhtState *state)
{
LASSRSH lassrs;
char *proj4_input = NULL;
static char *proj4_output = "+proj=longlat +datum=WGS84 +no_defs";
assert(state);
assert(state->header);
assert(config);
lassrs = LASHeader_GetSRS(state->header);
if ( ! lassrs )
{
ght_error("%s: unable to read SRS from LAS header", __func__);
return GHT_ERROR;
}
proj4_input = LASSRS_GetProj4(lassrs);
if ( ! proj4_input )
{
ght_error("%s: unable to read proj4 string from LAS SRS", __func__);
return GHT_ERROR;
}
ght_info("Got LAS file projection information '%s'", proj4_input);
state->pj_input = l2g_proj_from_string(proj4_input);
LASString_Free(proj4_input);
if ( ! state->pj_input )
{
ght_error("%s: unable to parse proj4 string '%s'", __func__, proj4_input);
return GHT_ERROR;
}
state->pj_output = l2g_proj_from_string(proj4_output);
if ( ! state->pj_output )
{
ght_error("%s: unable to parse proj4 string '%s'", __func__, proj4_input);
return GHT_ERROR;
}
return GHT_OK;
}
/* ---------------------------------------------------------------------------------- */
void print_header(LASHeaderH header, int bSkipVLR) {
char *pszSignature = NULL;
char *pszProjectId = NULL;
char *pszSystemId = NULL;
char *pszSoftwareId = NULL;
/*char *pszProj4 = NULL;*/
char *pszVLRUser = NULL;
char *pszVLRDescription = NULL;
uint16_t nVLRLength = 0;
uint16_t nVLRRecordId = 0;
LASVLRH pVLR = NULL;
LASSRSH pSRS = NULL;
uint32_t nVLR = 0;
int i = 0;
#ifdef HAVE_GEOTIFF
const GTIF* pGTIF = NULL;
#else
const void* pGTIF = NULL;
#endif
pszSignature = LASHeader_GetFileSignature(header);
pszProjectId = LASHeader_GetProjectId(header);
pszSystemId = LASHeader_GetSystemId(header);
pszSoftwareId = LASHeader_GetSoftwareId(header);
pSRS = LASHeader_GetSRS(header);
/*pszProj4 = LASSRS_GetProj4(pSRS);*/
pGTIF = LASSRS_GetGTIF(pSRS);
nVLR = LASHeader_GetRecordsCount(header);
mexPrintf("\n---------------------------------------------------------\n");
mexPrintf(" Header Summary\n");
mexPrintf("---------------------------------------------------------\n");
if (strcmp(pszSignature,"LASF") !=0) {
LASError_Print("File signature is not 'LASF'... aborting");
return;
}
mexPrintf(" Version: %d.%d\n",
LASHeader_GetVersionMajor(header), LASHeader_GetVersionMinor(header));
mexPrintf(" Source ID: %d\n", LASHeader_GetFileSourceId(header) ) ;
mexPrintf(" Reserved: %d\n", LASHeader_GetReserved(header) );
mexPrintf(" Project ID/GUID: '%s'\n", pszProjectId);
mexPrintf(" System Identifier: '%s'\n", pszSystemId);
mexPrintf(" Generating Software: '%s'\n", pszSoftwareId);
mexPrintf(" File Creation Day/Year: %d/%d\n",
LASHeader_GetCreationDOY(header), LASHeader_GetCreationYear(header));
mexPrintf(" Header Size %d\n", LASHeader_GetHeaderSize(header));
mexPrintf(" Offset to Point Data %d\n", LASHeader_GetDataOffset(header));
mexPrintf(" Number Var. Length Records %d\n", LASHeader_GetRecordsCount(header));
mexPrintf(" Point Data Format %d\n", LASHeader_GetDataFormatId(header));
mexPrintf(" Point Data Record Length %d\n", LASHeader_GetDataRecordLength(header));
mexPrintf(" Number of Point Records %d\n", LASHeader_GetPointRecordsCount(header));
mexPrintf(" Number of Points by Return %d %d %d %d %d\n",
LASHeader_GetPointRecordsByReturnCount(header, 0),
LASHeader_GetPointRecordsByReturnCount(header, 1),
LASHeader_GetPointRecordsByReturnCount(header, 2),
LASHeader_GetPointRecordsByReturnCount(header, 3),
LASHeader_GetPointRecordsByReturnCount(header, 4));
mexPrintf(" Scale Factor X Y Z %.6g %.6g %.6g\n",
LASHeader_GetScaleX(header),
LASHeader_GetScaleY(header),
LASHeader_GetScaleZ(header));
mexPrintf(" Offset X Y Z %.6f %.6f %.6f\n",
LASHeader_GetOffsetX(header),
LASHeader_GetOffsetY(header),
LASHeader_GetOffsetZ(header));
mexPrintf(" Min X Y Z %.6f %.6f %.6f\n",
LASHeader_GetMinX(header),
LASHeader_GetMinY(header),
LASHeader_GetMinZ(header));
mexPrintf(" Max X Y Z %.6f %.6f %.6f\n",
LASHeader_GetMaxX(header),
LASHeader_GetMaxY(header),
LASHeader_GetMaxZ(header));
/*mexPrintf(" Spatial Reference %s\n", pszProj4);*/
#ifdef HAVE_LIBGEOTIFF
if (pGTIF) GTIFPrint((GTIF*)pGTIF, 0, 0);
#endif
if (nVLR && !bSkipVLR) {
mexPrintf("\n---------------------------------------------------------\n");
mexPrintf(" VLR Summary\n");
mexPrintf("---------------------------------------------------------\n");
for (i = 0; i < (int)nVLR; i++) {
pVLR = LASHeader_GetVLR(header, i);
if (LASError_GetLastErrorNum()) {
LASError_Print("Unable to fetch VLR");
return;
}
pszVLRUser = LASVLR_GetUserId(pVLR);
pszVLRDescription = LASVLR_GetDescription(pVLR);
nVLRLength = LASVLR_GetRecordLength(pVLR);
nVLRRecordId = LASVLR_GetRecordId(pVLR);
mexPrintf(" User: '******' - Description: '%s'\n", pszVLRUser, pszVLRDescription);
mexPrintf(" ID: %d Length: %d\n\n", nVLRRecordId, nVLRLength);
LASVLR_Destroy(pVLR);
pVLR = NULL;
LASString_Free(pszVLRUser);
LASString_Free(pszVLRDescription);
}
}
LASString_Free(pszSignature);
LASString_Free(pszProjectId);
LASString_Free(pszSystemId);
LASString_Free(pszSoftwareId);
/*LASString_Free(pszProj4);*/
}
int main(int argc, char *argv[])
{
int out_fd, base_raster;
char *infile, *outmap;
int percent;
double zrange_min, zrange_max, d_tmp;
double irange_min, irange_max;
unsigned long estimated_lines;
RASTER_MAP_TYPE rtype, base_raster_data_type;
struct History history;
char title[64];
SEGMENT base_segment;
struct PointBinning point_binning;
void *base_array;
void *raster_row;
struct Cell_head region;
struct Cell_head input_region;
int rows, last_rows, row0, cols; /* scan box size */
int row; /* counters */
int pass, npasses;
unsigned long line, line_total;
unsigned int counter;
unsigned long n_invalid;
char buff[BUFFSIZE];
double x, y, z;
double intensity;
int arr_row, arr_col;
unsigned long count, count_total;
int point_class;
double zscale = 1.0;
double iscale = 1.0;
double res = 0.0;
struct BinIndex bin_index_nodes;
bin_index_nodes.num_nodes = 0;
bin_index_nodes.max_nodes = 0;
bin_index_nodes.nodes = 0;
struct GModule *module;
struct Option *input_opt, *output_opt, *percent_opt, *type_opt, *filter_opt, *class_opt;
struct Option *method_opt, *base_raster_opt;
struct Option *zrange_opt, *zscale_opt;
struct Option *irange_opt, *iscale_opt;
struct Option *trim_opt, *pth_opt, *res_opt;
struct Option *file_list_opt;
struct Flag *print_flag, *scan_flag, *shell_style, *over_flag, *extents_flag;
struct Flag *intens_flag, *intens_import_flag;
struct Flag *set_region_flag;
struct Flag *base_rast_res_flag;
struct Flag *only_valid_flag;
/* LAS */
LASReaderH LAS_reader;
LASHeaderH LAS_header;
LASSRSH LAS_srs;
LASPointH LAS_point;
int return_filter;
const char *projstr;
struct Cell_head cellhd, loc_wind;
unsigned int n_filtered;
G_gisinit(argv[0]);
module = G_define_module();
G_add_keyword(_("raster"));
G_add_keyword(_("import"));
G_add_keyword(_("LIDAR"));
G_add_keyword(_("statistics"));
G_add_keyword(_("conversion"));
G_add_keyword(_("aggregation"));
G_add_keyword(_("binning"));
module->description =
_("Creates a raster map from LAS LiDAR points using univariate statistics.");
input_opt = G_define_standard_option(G_OPT_F_BIN_INPUT);
input_opt->required = NO;
input_opt->label = _("LAS input file");
input_opt->description = _("LiDAR input files in LAS format (*.las or *.laz)");
input_opt->guisection = _("Input");
output_opt = G_define_standard_option(G_OPT_R_OUTPUT);
output_opt->required = NO;
output_opt->guisection = _("Output");
file_list_opt = G_define_standard_option(G_OPT_F_INPUT);
file_list_opt->key = "file";
file_list_opt->label = _("File containing names of LAS input files");
file_list_opt->description = _("LiDAR input files in LAS format (*.las or *.laz)");
file_list_opt->required = NO;
file_list_opt->guisection = _("Input");
method_opt = G_define_option();
method_opt->key = "method";
method_opt->type = TYPE_STRING;
method_opt->required = NO;
method_opt->description = _("Statistic to use for raster values");
method_opt->options =
"n,min,max,range,sum,mean,stddev,variance,coeff_var,median,percentile,skewness,trimmean";
method_opt->answer = "mean";
method_opt->guisection = _("Statistic");
G_asprintf((char **)&(method_opt->descriptions),
"n;%s;"
"min;%s;"
"max;%s;"
"range;%s;"
"sum;%s;"
"mean;%s;"
"stddev;%s;"
"variance;%s;"
"coeff_var;%s;"
"median;%s;"
"percentile;%s;"
"skewness;%s;"
"trimmean;%s",
_("Number of points in cell"),
_("Minimum value of point values in cell"),
_("Maximum value of point values in cell"),
_("Range of point values in cell"),
_("Sum of point values in cell"),
_("Mean (average) value of point values in cell"),
_("Standard deviation of point values in cell"),
_("Variance of point values in cell"),
_("Coefficient of variance of point values in cell"),
_("Median value of point values in cell"),
_("pth (nth) percentile of point values in cell"),
_("Skewness of point values in cell"),
_("Trimmed mean of point values in cell"));
type_opt = G_define_standard_option(G_OPT_R_TYPE);
type_opt->required = NO;
type_opt->answer = "FCELL";
base_raster_opt = G_define_standard_option(G_OPT_R_INPUT);
base_raster_opt->key = "base_raster";
base_raster_opt->required = NO;
base_raster_opt->label =
_("Subtract raster values from the Z coordinates");
base_raster_opt->description =
_("The scale for Z is applied beforehand, the range filter for"
" Z afterwards");
base_raster_opt->guisection = _("Transform");
zrange_opt = G_define_option();
zrange_opt->key = "zrange";
zrange_opt->type = TYPE_DOUBLE;
zrange_opt->required = NO;
zrange_opt->key_desc = "min,max";
zrange_opt->description = _("Filter range for Z data (min,max)");
zrange_opt->guisection = _("Selection");
zscale_opt = G_define_option();
zscale_opt->key = "zscale";
zscale_opt->type = TYPE_DOUBLE;
zscale_opt->required = NO;
zscale_opt->answer = "1.0";
zscale_opt->description = _("Scale to apply to Z data");
zscale_opt->guisection = _("Transform");
irange_opt = G_define_option();
irange_opt->key = "intensity_range";
irange_opt->type = TYPE_DOUBLE;
irange_opt->required = NO;
irange_opt->key_desc = "min,max";
irange_opt->description = _("Filter range for intensity values (min,max)");
irange_opt->guisection = _("Selection");
iscale_opt = G_define_option();
iscale_opt->key = "intensity_scale";
iscale_opt->type = TYPE_DOUBLE;
iscale_opt->required = NO;
iscale_opt->answer = "1.0";
iscale_opt->description = _("Scale to apply to intensity values");
iscale_opt->guisection = _("Transform");
percent_opt = G_define_option();
percent_opt->key = "percent";
percent_opt->type = TYPE_INTEGER;
percent_opt->required = NO;
percent_opt->answer = "100";
percent_opt->options = "1-100";
percent_opt->description = _("Percent of map to keep in memory");
/* I would prefer to call the following "percentile", but that has too
* much namespace overlap with the "percent" option above */
pth_opt = G_define_option();
pth_opt->key = "pth";
pth_opt->type = TYPE_INTEGER;
pth_opt->required = NO;
pth_opt->options = "1-100";
pth_opt->description = _("pth percentile of the values");
pth_opt->guisection = _("Statistic");
trim_opt = G_define_option();
trim_opt->key = "trim";
trim_opt->type = TYPE_DOUBLE;
trim_opt->required = NO;
trim_opt->options = "0-50";
trim_opt->label = _("Discard given percentage of the smallest and largest values");
trim_opt->description =
_("Discard <trim> percent of the smallest and <trim> percent of the largest observations");
trim_opt->guisection = _("Statistic");
res_opt = G_define_option();
res_opt->key = "resolution";
res_opt->type = TYPE_DOUBLE;
res_opt->required = NO;
res_opt->description =
_("Output raster resolution");
res_opt->guisection = _("Output");
filter_opt = G_define_option();
filter_opt->key = "return_filter";
filter_opt->type = TYPE_STRING;
filter_opt->required = NO;
filter_opt->label = _("Only import points of selected return type");
filter_opt->description = _("If not specified, all points are imported");
filter_opt->options = "first,last,mid";
filter_opt->guisection = _("Selection");
class_opt = G_define_option();
class_opt->key = "class_filter";
class_opt->type = TYPE_INTEGER;
class_opt->multiple = YES;
class_opt->required = NO;
class_opt->label = _("Only import points of selected class(es)");
class_opt->description = _("Input is comma separated integers. "
"If not specified, all points are imported.");
class_opt->guisection = _("Selection");
print_flag = G_define_flag();
print_flag->key = 'p';
print_flag->description =
_("Print LAS file info and exit");
extents_flag = G_define_flag();
extents_flag->key = 'e';
extents_flag->label =
_("Use the extent of the input for the raster extent");
extents_flag->description =
_("Set internally computational region extents based on the"
" point cloud");
extents_flag->guisection = _("Output");
set_region_flag = G_define_flag();
set_region_flag->key = 'n';
set_region_flag->label =
_("Set computation region to match the new raster map");
set_region_flag->description =
_("Set computation region to match the 2D extent and resolution"
" of the newly created new raster map");
set_region_flag->guisection = _("Output");
over_flag = G_define_flag();
over_flag->key = 'o';
over_flag->label =
_("Override projection check (use current location's projection)");
over_flag->description =
_("Assume that the dataset has same projection as the current location");
scan_flag = G_define_flag();
scan_flag->key = 's';
scan_flag->description = _("Scan data file for extent then exit");
shell_style = G_define_flag();
shell_style->key = 'g';
shell_style->description =
_("In scan mode, print using shell script style");
intens_flag = G_define_flag();
intens_flag->key = 'i';
intens_flag->label =
_("Use intensity values rather than Z values");
intens_flag->description =
_("Uses intensity values everywhere as if they would be Z"
" coordinates");
intens_import_flag = G_define_flag();
intens_import_flag->key = 'j';
intens_import_flag->description =
_("Use Z values for filtering, but intensity values for statistics");
base_rast_res_flag = G_define_flag();
base_rast_res_flag->key = 'd';
base_rast_res_flag->label =
_("Use base raster resolution instead of computational region");
base_rast_res_flag->description =
_("For getting values from base raster, use its actual"
" resolution instead of computational region resolution");
only_valid_flag = G_define_flag();
only_valid_flag->key = 'v';
only_valid_flag->label = _("Use only valid points");
only_valid_flag->description =
_("Points invalid according to APSRS LAS specification will be"
" filtered out");
only_valid_flag->guisection = _("Selection");
G_option_required(input_opt, file_list_opt, NULL);
G_option_exclusive(input_opt, file_list_opt, NULL);
G_option_required(output_opt, print_flag, scan_flag, shell_style, NULL);
G_option_exclusive(intens_flag, intens_import_flag, NULL);
G_option_requires(base_rast_res_flag, base_raster_opt, NULL);
if (G_parser(argc, argv))
exit(EXIT_FAILURE);
int only_valid = FALSE;
n_invalid = 0;
if (only_valid_flag->answer)
only_valid = TRUE;
/* we could use rules but this gives more info and allows continuing */
if (set_region_flag->answer && !(extents_flag->answer || res_opt->answer)) {
G_warning(_("Flag %c makes sense only with %s option or -%c flag"),
set_region_flag->key, res_opt->key, extents_flag->key);
/* avoid the call later on */
set_region_flag->answer = '\0';
}
struct StringList infiles;
if (file_list_opt->answer) {
if (access(file_list_opt->answer, F_OK) != 0)
G_fatal_error(_("File <%s> does not exist"), file_list_opt->answer);
string_list_from_file(&infiles, file_list_opt->answer);
}
else {
string_list_from_one_item(&infiles, input_opt->answer);
}
/* parse input values */
outmap = output_opt->answer;
if (shell_style->answer && !scan_flag->answer) {
scan_flag->answer = 1; /* pointer not int, so set = shell_style->answer ? */
}
/* check zrange and extent relation */
if (scan_flag->answer || extents_flag->answer) {
if (zrange_opt->answer)
G_warning(_("zrange will not be taken into account during scan"));
}
Rast_get_window(®ion);
/* G_get_window seems to be unreliable if the location has been changed */
G_get_set_window(&loc_wind); /* TODO: v.in.lidar uses G_get_default_window() */
estimated_lines = 0;
int i;
for (i = 0; i < infiles.num_items; i++) {
infile = infiles.items[i];
/* don't if file not found */
if (access(infile, F_OK) != 0)
G_fatal_error(_("Input file <%s> does not exist"), infile);
/* Open LAS file*/
LAS_reader = LASReader_Create(infile);
if (LAS_reader == NULL)
G_fatal_error(_("Unable to open file <%s> as a LiDAR point cloud"),
infile);
LAS_header = LASReader_GetHeader(LAS_reader);
if (LAS_header == NULL) {
G_fatal_error(_("Unable to read LAS header of <%s>"), infile);
}
LAS_srs = LASHeader_GetSRS(LAS_header);
/* print info or check projection if we are actually importing */
if (print_flag->answer) {
/* print filename when there is more than one file */
if (infiles.num_items > 1)
fprintf(stdout, "File: %s\n", infile);
/* Print LAS header */
print_lasinfo(LAS_header, LAS_srs);
}
else {
/* report that we are checking more files */
if (i == 1)
G_message(_("First file's projection checked,"
" checking projection of the other files..."));
/* Fetch input map projection in GRASS form. */
projstr = LASSRS_GetWKT_CompoundOK(LAS_srs);
/* we are printing the non-warning messages only for first file */
projection_check_wkt(cellhd, loc_wind, projstr, over_flag->answer,
shell_style->answer || i);
/* if there is a problem in some other file, first OK message
* is printed but than a warning, this is not ideal but hopefully
* not so confusing when importing multiple files */
}
if (scan_flag->answer || extents_flag->answer) {
/* we assign to the first one (i==0) but update for the rest */
scan_bounds(LAS_reader, shell_style->answer, extents_flag->answer, i,
zscale, ®ion);
}
/* number of estimated point across all files */
/* TODO: this should be ull which won't work with percent report */
estimated_lines += LASHeader_GetPointRecordsCount(LAS_header);
/* We are closing all again and we will be opening them later,
* so we don't have to worry about limit for open files. */
LASSRS_Destroy(LAS_srs);
LASHeader_Destroy(LAS_header);
LASReader_Destroy(LAS_reader);
}
/* if we are not importing, end */
if (print_flag->answer || scan_flag->answer)
exit(EXIT_SUCCESS);
return_filter = LAS_ALL;
if (filter_opt->answer) {
if (strcmp(filter_opt->answer, "first") == 0)
return_filter = LAS_FIRST;
else if (strcmp(filter_opt->answer, "last") == 0)
return_filter = LAS_LAST;
else if (strcmp(filter_opt->answer, "mid") == 0)
return_filter = LAS_MID;
else
G_fatal_error(_("Unknown filter option <%s>"), filter_opt->answer);
}
struct ReturnFilter return_filter_struct;
return_filter_struct.filter = return_filter;
struct ClassFilter class_filter;
class_filter_create_from_strings(&class_filter, class_opt->answers);
percent = atoi(percent_opt->answer);
/* TODO: we already used zscale */
/* TODO: we don't report intensity range */
if (zscale_opt->answer)
zscale = atof(zscale_opt->answer);
if (iscale_opt->answer)
iscale = atof(iscale_opt->answer);
/* parse zrange */
if (zrange_opt->answer != NULL) {
if (zrange_opt->answers[0] == NULL)
G_fatal_error(_("Invalid zrange"));
sscanf(zrange_opt->answers[0], "%lf", &zrange_min);
sscanf(zrange_opt->answers[1], "%lf", &zrange_max);
if (zrange_min > zrange_max) {
d_tmp = zrange_max;
zrange_max = zrange_min;
zrange_min = d_tmp;
}
}
/* parse irange */
if (irange_opt->answer != NULL) {
if (irange_opt->answers[0] == NULL)
G_fatal_error(_("Invalid %s"), irange_opt->key);
sscanf(irange_opt->answers[0], "%lf", &irange_min);
sscanf(irange_opt->answers[1], "%lf", &irange_max);
if (irange_min > irange_max) {
d_tmp = irange_max;
irange_max = irange_min;
irange_min = d_tmp;
}
}
point_binning_set(&point_binning, method_opt->answer, pth_opt->answer,
trim_opt->answer, FALSE);
base_array = NULL;
if (strcmp("CELL", type_opt->answer) == 0)
rtype = CELL_TYPE;
else if (strcmp("DCELL", type_opt->answer) == 0)
rtype = DCELL_TYPE;
else
rtype = FCELL_TYPE;
if (point_binning.method == METHOD_N)
rtype = CELL_TYPE;
if (res_opt->answer) {
/* align to resolution */
res = atof(res_opt->answer);
if (!G_scan_resolution(res_opt->answer, &res, region.proj))
G_fatal_error(_("Invalid input <%s=%s>"), res_opt->key, res_opt->answer);
if (res <= 0)
G_fatal_error(_("Option '%s' must be > 0.0"), res_opt->key);
region.ns_res = region.ew_res = res;
region.north = ceil(region.north / res) * res;
region.south = floor(region.south / res) * res;
region.east = ceil(region.east / res) * res;
region.west = floor(region.west / res) * res;
G_adjust_Cell_head(®ion, 0, 0);
}
else if (extents_flag->answer) {
/* align to current region */
Rast_align_window(®ion, &loc_wind);
}
Rast_set_output_window(®ion);
rows = last_rows = region.rows;
npasses = 1;
if (percent < 100) {
rows = (int)(region.rows * (percent / 100.0));
npasses = region.rows / rows;
last_rows = region.rows - npasses * rows;
if (last_rows)
npasses++;
else
last_rows = rows;
}
cols = region.cols;
G_debug(2, "region.n=%f region.s=%f region.ns_res=%f", region.north,
region.south, region.ns_res);
G_debug(2, "region.rows=%d [box_rows=%d] region.cols=%d", region.rows,
rows, region.cols);
/* using row-based chunks (used for output) when input and output
* region matches and using segment library when they don't */
int use_segment = 0;
int use_base_raster_res = 0;
/* TODO: see if the input region extent is smaller than the raster
* if yes, the we need to load the whole base raster if the -e
* flag was defined (alternatively clip the regions) */
if (base_rast_res_flag->answer)
use_base_raster_res = 1;
if (base_raster_opt->answer && (res_opt->answer || use_base_raster_res
|| extents_flag->answer))
use_segment = 1;
if (base_raster_opt->answer && !use_segment) {
/* TODO: do we need to test existence first? mapset? */
base_raster = Rast_open_old(base_raster_opt->answer, "");
base_raster_data_type = Rast_get_map_type(base_raster);
base_array = G_calloc((size_t)rows * (cols + 1), Rast_cell_size(base_raster_data_type));
}
if (base_raster_opt->answer && use_segment) {
if (use_base_raster_res) {
/* read raster actual extent and resolution */
Rast_get_cellhd(base_raster_opt->answer, "", &input_region);
/* TODO: make it only as small as the output is or points are */
Rast_set_input_window(&input_region); /* we have split window */
} else {
Rast_get_input_window(&input_region);
}
rast_segment_open(&base_segment, base_raster_opt->answer, &base_raster_data_type);
}
if (!scan_flag->answer) {
if (!check_rows_cols_fit_to_size_t(rows, cols))
G_fatal_error(_("Unable to process the hole map at once. "
"Please set the '%s' option to some value lower than 100."),
percent_opt->key);
point_binning_memory_test(&point_binning, rows, cols, rtype);
}
/* open output map */
out_fd = Rast_open_new(outmap, rtype);
/* allocate memory for a single row of output data */
raster_row = Rast_allocate_output_buf(rtype);
G_message(_("Reading data ..."));
count_total = line_total = 0;
/* main binning loop(s) */
for (pass = 1; pass <= npasses; pass++) {
if (npasses > 1)
G_message(_("Pass #%d (of %d) ..."), pass, npasses);
/* figure out segmentation */
row0 = (pass - 1) * rows;
if (pass == npasses) {
rows = last_rows;
}
if (base_array) {
G_debug(2, "filling base raster array");
for (row = 0; row < rows; row++) {
Rast_get_row(base_raster, base_array + ((size_t) row * cols * Rast_cell_size(base_raster_data_type)), row, base_raster_data_type);
}
}
G_debug(2, "pass=%d/%d rows=%d", pass, npasses, rows);
point_binning_allocate(&point_binning, rows, cols, rtype);
line = 0;
count = 0;
counter = 0;
G_percent_reset();
/* loop of input files */
for (i = 0; i < infiles.num_items; i++) {
infile = infiles.items[i];
/* we already know file is there, so just do basic checks */
LAS_reader = LASReader_Create(infile);
if (LAS_reader == NULL)
G_fatal_error(_("Unable to open file <%s>"), infile);
while ((LAS_point = LASReader_GetNextPoint(LAS_reader)) != NULL) {
line++;
counter++;
if (counter == 100000) { /* speed */
if (line < estimated_lines)
G_percent(line, estimated_lines, 3);
counter = 0;
}
/* We always count them and report because behavior
* changed in between 7.0 and 7.2 from undefined (but skipping
* invalid points) to filtering them out only when requested. */
if (!LASPoint_IsValid(LAS_point)) {
n_invalid++;
if (only_valid)
continue;
}
x = LASPoint_GetX(LAS_point);
y = LASPoint_GetY(LAS_point);
if (intens_flag->answer)
/* use intensity as z here to allow all filters (and
* modifications) below to be applied for intensity */
z = LASPoint_GetIntensity(LAS_point);
else
z = LASPoint_GetZ(LAS_point);
int return_n = LASPoint_GetReturnNumber(LAS_point);
int n_returns = LASPoint_GetNumberOfReturns(LAS_point);
if (return_filter_is_out(&return_filter_struct, return_n, n_returns)) {
n_filtered++;
continue;
}
point_class = (int) LASPoint_GetClassification(LAS_point);
if (class_filter_is_out(&class_filter, point_class))
continue;
if (y <= region.south || y > region.north) {
continue;
}
if (x < region.west || x >= region.east) {
continue;
}
/* find the bin in the current array box */
arr_row = (int)((region.north - y) / region.ns_res) - row0;
if (arr_row < 0 || arr_row >= rows)
continue;
arr_col = (int)((x - region.west) / region.ew_res);
z = z * zscale;
if (base_array) {
double base_z;
if (row_array_get_value_row_col(base_array, arr_row, arr_col,
cols, base_raster_data_type,
&base_z))
z -= base_z;
else
continue;
}
else if (use_segment) {
double base_z;
if (rast_segment_get_value_xy(&base_segment, &input_region,
base_raster_data_type, x, y,
&base_z))
z -= base_z;
else
continue;
}
if (zrange_opt->answer) {
if (z < zrange_min || z > zrange_max) {
continue;
}
}
if (intens_import_flag->answer || irange_opt->answer) {
intensity = LASPoint_GetIntensity(LAS_point);
intensity *= iscale;
if (irange_opt->answer) {
if (intensity < irange_min || intensity > irange_max) {
continue;
}
}
/* use intensity for statistics */
if (intens_import_flag->answer)
z = intensity;
}
count++;
/* G_debug(5, "x: %f, y: %f, z: %f", x, y, z); */
update_value(&point_binning, &bin_index_nodes, cols,
arr_row, arr_col, rtype, x, y, z);
} /* while !EOF of one input file */
/* close input LAS file */
LASReader_Destroy(LAS_reader);
} /* end of loop for all input files files */
G_percent(1, 1, 1); /* flush */
G_debug(2, "pass %d finished, %lu coordinates in box", pass, count);
count_total += count;
line_total += line;
/* calc stats and output */
G_message(_("Writing to map ..."));
for (row = 0; row < rows; row++) {
/* potentially vector writing can be independent on the binning */
write_values(&point_binning, &bin_index_nodes, raster_row, row,
cols, rtype, NULL);
/* write out line of raster data */
Rast_put_row(out_fd, raster_row, rtype);
}
/* free memory */
point_binning_free(&point_binning, &bin_index_nodes);
} /* passes loop */
if (base_array)
Rast_close(base_raster);
if (use_segment)
Segment_close(&base_segment);
G_percent(1, 1, 1); /* flush */
G_free(raster_row);
/* close raster file & write history */
Rast_close(out_fd);
sprintf(title, "Raw X,Y,Z data binned into a raster grid by cell %s",
method_opt->answer);
Rast_put_cell_title(outmap, title);
Rast_short_history(outmap, "raster", &history);
Rast_command_history(&history);
Rast_set_history(&history, HIST_DATSRC_1, infile);
Rast_write_history(outmap, &history);
/* set computation region to the new raster map */
/* TODO: should be in the done message */
if (set_region_flag->answer)
G_put_window(®ion);
if (n_invalid && only_valid)
G_message(_("%lu input points were invalid and filtered out"),
n_invalid);
if (n_invalid && !only_valid)
G_message(_("%lu input points were invalid, use -%c flag to filter"
" them out"), n_invalid, only_valid_flag->key);
if (infiles.num_items > 1) {
sprintf(buff, _("Raster map <%s> created."
" %lu points from %d files found in region."),
outmap, count_total, infiles.num_items);
}
else {
sprintf(buff, _("Raster map <%s> created."
" %lu points found in region."),
outmap, count_total);
}
G_done_msg("%s", buff);
G_debug(1, "Processed %lu points.", line_total);
string_list_free(&infiles);
exit(EXIT_SUCCESS);
}
