/*!
\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;
}
GDALDataset* PCRasterDataset::create(
const char* filename,
int nr_cols,
int nr_rows,
int nrBands,
GDALDataType gdalType,
char** papszParmList)
{
// Checks
if(nrBands != 1){
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver : "
"attempt to create dataset with too many bands (%d); "
"must be 1 band.\n", nrBands);
return NULL;
}
int row_col_max = INT4_MAX - 1;
if(nr_cols > row_col_max){
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver : "
"attempt to create dataset with too many columns (%d); "
"must be smaller than %d.", nr_cols, row_col_max);
return NULL;
}
if(nr_rows > row_col_max){
CPLError(CE_Failure, CPLE_NotSupported,
"PCRaster driver : "
"attempt to create dataset with too many rows (%d); "
"must be smaller than %d.", nr_rows, row_col_max);
return NULL;
}
if(gdalType != GDT_Byte &&
gdalType != GDT_Int32 &&
gdalType != GDT_Float32){
CPLError( CE_Failure, CPLE_AppDefined,
"PCRaster driver: "
"attempt to create dataset with an illegal data type (%s); "
"use either Byte, Int32 or Float32.",
GDALGetDataTypeName(gdalType));
return NULL;
}
// value scale must be specified by the user,
// determines cell representation
const char *valueScale = CSLFetchNameValue(
papszParmList,"PCRASTER_VALUESCALE");
if(valueScale == NULL){
CPLError(CE_Failure, CPLE_AppDefined,
"PCRaster driver: value scale can not be determined; "
"specify PCRASTER_VALUESCALE.");
return NULL;
}
CSF_VS csf_value_scale = string2ValueScale(valueScale);
if(csf_value_scale == VS_UNDEFINED){
CPLError( CE_Failure, CPLE_AppDefined,
"PCRaster driver: value scale can not be determined (%s); "
"use either VS_BOOLEAN, VS_NOMINAL, VS_ORDINAL, VS_SCALAR, "
"VS_DIRECTION, VS_LDD",
valueScale);
return NULL;
}
CSF_CR csf_cell_representation = GDALType2CellRepresentation(gdalType, false);
// default values
REAL8 west = 0.0;
REAL8 north = 0.0;
REAL8 length = 1.0;
REAL8 angle = 0.0;
CSF_PT projection = PT_YDECT2B;
// Create a new raster
MAP* map = Rcreate(filename, nr_rows, nr_cols, csf_cell_representation,
csf_value_scale, projection, west, north, angle, length);
if(!map){
CPLError(CE_Failure, CPLE_OpenFailed,
"PCRaster driver: Unable to create raster %s", filename);
return NULL;
}
Mclose(map);
map = NULL;
/* -------------------------------------------------------------------- */
/* Re-open dataset, and copy any auxiliary pam information. */
/* -------------------------------------------------------------------- */
GDALPamDataset *poDS = (GDALPamDataset *)
GDALOpen(filename, GA_Update);
return poDS;
}
/* Function for resampling N input maps into 1 output map.
* Assumes a map "clone.map" and N "input.map"s present. Checks on
* options for percentage and maximum value.
* Determines type and characteristics of output map.
* Returns nothing, exits with 1 in case of error.
*/
int main(int argc, /* number of arguments */
char *argv[]) /* list of arguments */
{
MAP *clone, *out, *tmp, **in;
char *outputName, *cloneName;
int c, borderval;
size_t nrMaps,i;
REAL8 X0, Y0, cellSize, angleIn, angleOut;
size_t nrRows, nrCols;
CSF_PT projection;
CSF_CR cellRepr;
CSF_VS valueScale;
double percent = 0, errFactor = 2.5, resampleN = 0.0;
BOOL aligned = TRUE;
BOOL keepInputMinMax = FALSE;
REAL8 minAllInput=0, maxAllInput=0;
BOOL onlyReal4 = TRUE, contract = FALSE;
BOOL onlyUint1 = TRUE;
if(InstallArgs(argc, argv,"axmp$r$c#b#e$RBCk", "resample", __DATE__))
exit(1);
while((c = GetOpt()) != 0)
{
switch(c)
{
case 'b': opB = TRUE;
borderval = *((int *) OptArg);
break;
case 'B': opB = TRUE;
borderval = 0;
break;
case 'C': opMV = TRUE;
borderval = 0;
break;
case 'c': opMV = TRUE;
borderval = *((int *) OptArg);
break;
case 'a':contract = TRUE;
break;
case 'x':contract = FALSE;
break;
case 'm':opMax = 1;
break;
case 'p':opPer = 1;
percent = *((double*) OptArg);
if(percent < 0 || 100 < percent)
{
Error("illegal percentage");
exit(1);
}
break;
case 'R':opR = 1;
resampleN = 1;
break;
case 'r':opR = 1;
resampleN = *((double*) OptArg);
break;
case 'e':optionAcc = 1;
errFactor = *((double*) OptArg);
break;
case 'k': keepInputMinMax = TRUE;
break;
}
}
argv = ArgArguments(&argc);
if (AppArgCountCheck(argc,3,-1,USAGE))
exit(1);
outputName = argv[argc-1];
nrMaps = argc-2;
/* Read the desired specifics out of the clone map
* or use first input as clone map
*/
cloneName = NO_CLONE_NEEDED ? argv[1] : NULL;
if ( (clone = AppOpenClone(&cloneName,cloneName)) == NULL)
exit(1);
/* Determine the valueScale out of 1st input map */
tmp = Mopen(argv[1], M_READ);
if(tmp == NULL)
MperrorExit(argv[1], 1);
/* all input maps have same value scale */
valueScale = RgetValueScale(tmp);
if(valueScale == VS_LDD && !opMV)
{
Error("can not do this type of resampling on map '%s' with type ldd", argv[1]);
exit(1);
}
/* adjust old ones */
if(valueScale == VS_CLASSIFIED)
valueScale = VS_ORDINAL;
if(valueScale == VS_CONTINUOUS)
valueScale = VS_SCALAR;
/* get location attributes of clone or of 1st input map */
projection = MgetProjection(clone);
nrRows = RgetNrRows(clone);
nrCols = RgetNrCols(clone);
X0 = RgetX0(clone);
Y0 = RgetY0(clone);
cellRepr = RgetCellRepr(clone);
angleOut = RgetAngle(clone);
/* resample option -> cell size(inputmap) * factor
* Number of rows and columns are divided by resample
* factor.
*/
if(opR == 1)
{
/* setting for unit */
if(!appUnitTrue)
{
cellSize = resampleN;
resampleN /= (double) RgetCellSize(tmp);
}
else
cellSize = RgetCellSize(tmp) * resampleN;
if(contract)
{
nrRows = floor((double) nrRows /
(double) resampleN);
nrCols = floor((double) nrCols /
(double) resampleN);
/* Prevent an illegal map */
if(nrRows == 0)
nrRows = 1;
if(nrCols == 0)
nrCols = 1;
}
else
{
nrRows = ceil((double) nrRows /
(double) resampleN);
nrCols = ceil((double) nrCols /
(double) resampleN);
}
}
else
cellSize = RgetCellSize(clone);
/* Allocate memory for the input map pointers */
in = (MAP **)ChkMalloc(sizeof(MAP *) * nrMaps);
if(in == NULL)
{
AppEnd();
exit(1);
}
/* Read all input maps with desired cell representation */
for(i = 0; i < nrMaps; i++)
{
REAL8 tmpMin, tmpMax;
tmp = Mopen(argv[1 + i], M_READ);
angleIn = RgetAngle(tmp);
if(angleIn != 0)
aligned = FALSE;
if(tmp == NULL)
MperrorExit(argv[1 + i], 1);
if(!RvalueScaleIs(tmp, valueScale))
{
Error("%s has illegal data type: '%s'\n",
argv[1 + i], RstrValueScale(valueScale));
exit(1);
}
in[i] = tmp;
/* Determine which cell representation should be used */
onlyReal4 = RgetCellRepr(in[i]) == CR_REAL4;
onlyUint1 = RgetCellRepr(in[i]) == CR_UINT1;
RuseAs(in[i], CR_REAL8);
RgetMinVal(tmp, &tmpMin);
RgetMaxVal(tmp, &tmpMax);
if (i==0)
{minAllInput = tmpMin; maxAllInput = tmpMax; }
minAllInput = MIN(minAllInput,tmpMin);
maxAllInput = MAX(maxAllInput,tmpMax);
if(AppIsClassified(valueScale))
RuseAs(in[i], CR_INT4);
else
RuseAs(in[i], CR_REAL8);
}
if(opB == 1 || opMV == 1)
{
if(CheckInputMaps(in, nrMaps, projection, angleIn, cellSize))
{
Error("");
FreeMaps(in, nrMaps);
exit(1);
}
if(opB == 1)
{
if(SmallestFittingRectangle(&X0, &Y0, &nrRows,
&nrCols, in, borderval, nrMaps,
cellSize, angleIn, projection, contract))
{
FreeMaps(in, nrMaps);
AppEnd();
exit(1);
}
}
else
{
if(SmallestNonMVRect(&X0, &Y0, &nrRows, &nrCols, in,
borderval, nrMaps, valueScale, cellSize,
angleIn, projection, contract))
{
FreeMaps(in, nrMaps);
AppEnd();
exit(1);
}
}
}
/* Create output map with suitable cell representation */
/* NOTE ! Create map with smallest representation possible */
out = Rcreate(outputName, nrRows, nrCols,
AppIsClassified(valueScale) ?
(onlyUint1 ? CR_UINT1 : CR_INT4) :
(onlyReal4 ? CR_REAL4 : CR_REAL8),
valueScale, projection, X0, Y0,
angleOut, cellSize);
if(out == NULL)
{
FreeMaps(in, nrMaps);
Error("can not create output map '%s': %s",
argv[1], MstrError());
exit(1);
}
RuseAs(out, AppIsClassified(valueScale) ? CR_INT4 : CR_REAL8);
if(angleOut != 0)
aligned = FALSE;
/* determine raster size according wanted accuracy */
if(opB != 1 && opMV != 1)
{
if(DetRasterSize(out, in, nrMaps, errFactor))
{
Error("Illegal cell size\n");
exit(1);
}
}
else
rasterSize = 1;
if(nrMaps > 1 && percent > 0)
AppProgress("rasterSize: %d\n", rasterSize);
else
AppProgress("No raster used\n");
/* Call function */
if(AppIsClassified(valueScale))
{ /* Call resample function for classified maps */
if(SampleClass(out, in, percent, nrMaps, nrRows, nrCols,
aligned, angleOut))
{
EndResample(in, nrMaps, out);
exit(1); /* Memory allocation failed */
}
}
else
{ /* Call resample function for continuous maps */
if(SampleCont(out, in, percent, nrMaps, nrRows, nrCols,
aligned, angleOut))
{
EndResample(in, nrMaps, out);
exit(1); /* Memory allocation failed */
}
}
/* End of call */
if (keepInputMinMax) {
RuseAs(out, CR_REAL8);
RputMinVal(out, &minAllInput);
RputMaxVal(out, &maxAllInput);
}
EndResample(in, nrMaps, out);
exit(0); /* Successful exit */
return 0; /* Never reached */
} /* main */
