static int CreateMap(
const char *name,
const ATTRIBUTES *a)
{
UINT1 *buf;
size_t i;
double angle;
MAP *m;
size_t CELLMAX = (long int)(pow(2,30) - 1);
if(((size_t)a->nrRows * (size_t)a->nrCols) > CELLMAX){
printf("WARNING:\n The specified amount of cells exceeds 2^30 - 1.\n Not all PCRaster applications accept maps of this size.\n");
}
if (a->angle < 0)
angle = -Deg2Rad(-a->angle);
else
angle = Deg2Rad(a->angle);
m = Rcreate(name,(size_t)a->nrRows,(size_t)a->nrCols, a->cellRepr, a->valueScale,
a->projection, a->xUL, a->yUL, angle, a->cellSize);
if (m == NULL)
goto error1;
PRECOND(a->gisFileId != MV_UINT4);
if (MputGisFileId(m,a->gisFileId) == MV_UINT4)
goto error2;
if (RuseAs(m, CR_UINT1))
goto error2;
buf = (UINT1 *)Rmalloc(m, (size_t)a->nrCols);
if (buf == NULL)
{
Mclose(m);
remove(name);
return 1;
}
for(i=0; i < a->nrRows; i++)
{
memset(buf,1,(size_t)a->nrCols);
RputRow(m,i,buf);
}
Free(buf);
Mclose(m);
return 0;
error2:
Mclose(m);
remove(name);
error1:
return RetError(1,"Can not create '%s': %s",name,MstrError());
}
/* make all cells missing value in map
* RputAllMV writes a missing values to all the cells in a
* map. For this is allocates a buffer to hold one row at a
* time.
* returns 1 if succesfull, 0 in case of an error
*/
int RputAllMV(
MAP *m)
{
size_t i,nc,nr;
void *buffer;
CSF_CR cr;
CHECKHANDLE_GOTO(m, error);
if(! WRITE_ENABLE(m))
{
M_ERROR(NOACCESS);
goto error;
}
cr = RgetCellRepr(m);
nc = RgetNrCols(m);
buffer = Rmalloc(m,nc);
if(buffer == NULL)
{
M_ERROR(NOCORE);
goto error;
}
/* Fill buffer with determined Missingvalue*/
SetMemMV(buffer, nc, cr);
nr = RgetNrRows(m);
for(i = 0 ; i < nr; i++)
if (RputRow(m, i, buffer) != nc)
{
M_ERROR(WRITE_ERROR);
goto error_f;
}
CSF_FREE(buffer);
CsfSetVarTypeMV( &(m->raster.minVal), cr);
CsfSetVarTypeMV( &(m->raster.maxVal), cr);
return(1);
error_f:
CSF_FREE(buffer);
error:
return(0);
}
/*!
\warning The source raster must have only 1 band. Currently, the values in
the source raster must be stored in one of the supported cell
representations (CR_UINT1, CR_INT4, CR_REAL4, CR_REAL8).
The meta data item PCRASTER_VALUESCALE will be checked to see what value
scale to use. Otherwise a value scale is determined using
GDALType2ValueScale(GDALDataType).
This function always writes rasters using CR_UINT1, CR_INT4 or CR_REAL4
cell representations.
*/
GDALDataset* PCRasterDataset::createCopy(
char const* filename,
GDALDataset* source,
CPL_UNUSED int strict,
CPL_UNUSED char** options,
GDALProgressFunc progress,
void* progressData)
{
// Checks.
int nrBands = source->GetRasterCount();
if(nrBands != 1) {
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver: Too many bands ('%d'): must be 1 band", nrBands);
return 0;
}
GDALRasterBand* raster = source->GetRasterBand(1);
// Create PCRaster raster. Determine properties of raster to create.
size_t nrRows = raster->GetYSize();
size_t nrCols = raster->GetXSize();
std::string string;
// The in-file type of the cells.
CSF_CR fileCellRepresentation = GDALType2CellRepresentation(
raster->GetRasterDataType(), false);
if(fileCellRepresentation == CR_UNDEFINED) {
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver: Cannot determine a valid cell representation");
return 0;
}
// The value scale of the values.
CSF_VS valueScale = VS_UNDEFINED;
if(source->GetMetadataItem("PCRASTER_VALUESCALE")) {
string = source->GetMetadataItem("PCRASTER_VALUESCALE");
}
valueScale = !string.empty()
? string2ValueScale(string)
: GDALType2ValueScale(raster->GetRasterDataType());
if(valueScale == VS_UNDEFINED) {
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver: Cannot determine a valid value scale");
return 0;
}
CSF_PT const projection = PT_YDECT2B;
REAL8 const angle = 0.0;
REAL8 west = 0.0;
REAL8 north = 0.0;
REAL8 cellSize = 1.0;
double transform[6];
if(source->GetGeoTransform(transform) == CE_None) {
if(transform[2] == 0.0 && transform[4] == 0.0) {
west = static_cast<REAL8>(transform[0]);
north = static_cast<REAL8>(transform[3]);
cellSize = static_cast<REAL8>(transform[1]);
}
}
// The in-memory type of the cells.
CSF_CR appCellRepresentation = CR_UNDEFINED;
appCellRepresentation = GDALType2CellRepresentation(
raster->GetRasterDataType(), true);
if(appCellRepresentation == CR_UNDEFINED) {
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver: Cannot determine a valid cell representation");
return 0;
}
// Check whether value scale fits the cell representation. Adjust when
// needed.
valueScale = fitValueScale(valueScale, appCellRepresentation);
// Create a raster with the in file cell representation.
MAP* map = Rcreate(filename, nrRows, nrCols, fileCellRepresentation,
valueScale, projection, west, north, angle, cellSize);
if(!map) {
CPLError(CE_Failure, CPLE_OpenFailed,
"PCRaster driver: Unable to create raster %s", filename);
return 0;
}
// Try to convert in app cell representation to the cell representation
// of the file.
if(RuseAs(map, appCellRepresentation)) {
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver: Cannot convert cells: %s", MstrError());
Mclose(map);
return 0;
}
int hasMissingValue;
double missingValue = raster->GetNoDataValue(&hasMissingValue);
// This is needed to get my (KDJ) unit tests running.
// I am still uncertain why this is needed. If the input raster has float32
// values and the output int32, than the missing value in the dataset object
// is not updated like the values are.
if(missingValue == ::missingValue(CR_REAL4) &&
fileCellRepresentation == CR_INT4) {
missingValue = ::missingValue(fileCellRepresentation);
}
// TODO conversie van INT2 naar INT4 ondersteunen. zie ruseas.c regel 503.
// conversie op r 159.
// Create buffer for one row of values.
void* buffer = Rmalloc(map, nrCols);
// Copy values from source to target.
CPLErr errorCode = CE_None;
for(size_t row = 0; errorCode == CE_None && row < nrRows; ++row) {
// Get row from source.
if(raster->RasterIO(GF_Read, 0, row, nrCols, 1, buffer, nrCols, 1,
raster->GetRasterDataType(), 0, 0, NULL) != CE_None) {
CPLError(CE_Failure, CPLE_FileIO,
"PCRaster driver: Error reading from source raster");
errorCode = CE_Failure;
break;
}
// Upon reading values are converted to the
// right data type. This includes the missing value. If the source
// value cannot be represented in the target data type it is set to a
// missing value.
if(hasMissingValue) {
alterToStdMV(buffer, nrCols, appCellRepresentation, missingValue);
}
if(valueScale == VS_BOOLEAN) {
castValuesToBooleanRange(buffer, nrCols, appCellRepresentation);
}
// Write row in target.
RputRow(map, row, buffer);
if(!progress((row + 1) / (static_cast<double>(nrRows)), 0, progressData)) {
CPLError(CE_Failure, CPLE_UserInterrupt,
"PCRaster driver: User terminated CreateCopy()");
errorCode = CE_Failure;
break;
}
}
Mclose(map);
map = 0;
free(buffer);
buffer = 0;
if( errorCode != CE_None )
return NULL;
/* -------------------------------------------------------------------- */
/* Re-open dataset, and copy any auxiliary pam information. */
/* -------------------------------------------------------------------- */
GDALPamDataset *poDS = (GDALPamDataset *)
GDALOpen( filename, GA_Update );
if( poDS )
poDS->CloneInfo( source, GCIF_PAM_DEFAULT );
return poDS;
}