int main( int argc, char ** argv )
{
GDALDatasetH hDataset;
GDALRasterBandH hBand;
int i, iBand;
double adfGeoTransform[6];
GDALDriverH hDriver;
char **papszMetadata;
int bComputeMinMax = FALSE, bSample = FALSE;
int bShowGCPs = TRUE, bShowMetadata = TRUE, bShowRAT=TRUE;
int bStats = FALSE, bApproxStats = TRUE, iMDD;
int bShowColorTable = TRUE, bComputeChecksum = FALSE;
int bReportHistograms = FALSE;
const char *pszFilename = NULL;
char **papszExtraMDDomains = NULL, **papszFileList;
const char *pszProjection = NULL;
OGRCoordinateTransformationH hTransform = NULL;
/* Check that we are running against at least GDAL 1.5 */
/* Note to developers : if we use newer API, please change the requirement */
if (atoi(GDALVersionInfo("VERSION_NUM")) < 1500)
{
fprintf(stderr, "At least, GDAL >= 1.5.0 is required for this version of %s, "
"which was compiled against GDAL %s\n", argv[0], GDAL_RELEASE_NAME);
exit(1);
}
/* Must process GDAL_SKIP before GDALAllRegister(), but we can't call */
/* GDALGeneralCmdLineProcessor before it needs the drivers to be registered */
/* for the --format or --formats options */
for( i = 1; i < argc; i++ )
{
if( EQUAL(argv[i],"--config") && i + 2 < argc && EQUAL(argv[i + 1], "GDAL_SKIP") )
{
CPLSetConfigOption( argv[i+1], argv[i+2] );
i += 2;
}
}
GDALAllRegister();
argc = GDALGeneralCmdLineProcessor( argc, &argv, 0 );
if( argc < 1 )
exit( -argc );
/* -------------------------------------------------------------------- */
/* Parse arguments. */
/* -------------------------------------------------------------------- */
for( i = 1; i < argc; i++ )
{
if( EQUAL(argv[i], "--utility_version") )
{
printf("%s was compiled against GDAL %s and is running against GDAL %s\n",
argv[0], GDAL_RELEASE_NAME, GDALVersionInfo("RELEASE_NAME"));
return 0;
}
else if( EQUAL(argv[i], "-mm") )
bComputeMinMax = TRUE;
else if( EQUAL(argv[i], "-hist") )
bReportHistograms = TRUE;
else if( EQUAL(argv[i], "-stats") )
{
bStats = TRUE;
bApproxStats = FALSE;
}
else if( EQUAL(argv[i], "-approx_stats") )
{
bStats = TRUE;
bApproxStats = TRUE;
}
else if( EQUAL(argv[i], "-sample") )
bSample = TRUE;
else if( EQUAL(argv[i], "-checksum") )
bComputeChecksum = TRUE;
else if( EQUAL(argv[i], "-nogcp") )
bShowGCPs = FALSE;
else if( EQUAL(argv[i], "-nomd") )
bShowMetadata = FALSE;
else if( EQUAL(argv[i], "-norat") )
bShowRAT = FALSE;
else if( EQUAL(argv[i], "-noct") )
bShowColorTable = FALSE;
else if( EQUAL(argv[i], "-mdd") && i < argc-1 )
papszExtraMDDomains = CSLAddString( papszExtraMDDomains,
argv[++i] );
else if( argv[i][0] == '-' )
Usage();
else if( pszFilename == NULL )
pszFilename = argv[i];
else
Usage();
}
if( pszFilename == NULL )
Usage();
/* -------------------------------------------------------------------- */
/* Open dataset. */
/* -------------------------------------------------------------------- */
hDataset = GDALOpen( pszFilename, GA_ReadOnly );
if( hDataset == NULL )
{
fprintf( stderr,
"gdalinfo failed - unable to open '%s'.\n",
pszFilename );
CSLDestroy( argv );
GDALDumpOpenDatasets( stderr );
GDALDestroyDriverManager();
CPLDumpSharedList( NULL );
exit( 1 );
}
/* -------------------------------------------------------------------- */
/* Report general info. */
/* -------------------------------------------------------------------- */
hDriver = GDALGetDatasetDriver( hDataset );
printf( "Driver: %s/%s\n",
GDALGetDriverShortName( hDriver ),
GDALGetDriverLongName( hDriver ) );
papszFileList = GDALGetFileList( hDataset );
if( CSLCount(papszFileList) == 0 )
{
printf( "Files: none associated\n" );
}
else
{
printf( "Files: %s\n", papszFileList[0] );
for( i = 1; papszFileList[i] != NULL; i++ )
printf( " %s\n", papszFileList[i] );
}
CSLDestroy( papszFileList );
printf( "Size is %d, %d\n",
GDALGetRasterXSize( hDataset ),
GDALGetRasterYSize( hDataset ) );
/* -------------------------------------------------------------------- */
/* Report projection. */
/* -------------------------------------------------------------------- */
if( GDALGetProjectionRef( hDataset ) != NULL )
{
OGRSpatialReferenceH hSRS;
char *pszProjection;
pszProjection = (char *) GDALGetProjectionRef( hDataset );
hSRS = OSRNewSpatialReference(NULL);
if( OSRImportFromWkt( hSRS, &pszProjection ) == CE_None )
{
char *pszPrettyWkt = NULL;
OSRExportToPrettyWkt( hSRS, &pszPrettyWkt, FALSE );
printf( "Coordinate System is:\n%s\n", pszPrettyWkt );
CPLFree( pszPrettyWkt );
}
else
printf( "Coordinate System is `%s'\n",
GDALGetProjectionRef( hDataset ) );
OSRDestroySpatialReference( hSRS );
}
/* -------------------------------------------------------------------- */
/* Report Geotransform. */
/* -------------------------------------------------------------------- */
if( GDALGetGeoTransform( hDataset, adfGeoTransform ) == CE_None )
{
if( adfGeoTransform[2] == 0.0 && adfGeoTransform[4] == 0.0 )
{
printf( "Origin = (%.15f,%.15f)\n",
adfGeoTransform[0], adfGeoTransform[3] );
printf( "Pixel Size = (%.15f,%.15f)\n",
adfGeoTransform[1], adfGeoTransform[5] );
}
else
printf( "GeoTransform =\n"
" %.16g, %.16g, %.16g\n"
" %.16g, %.16g, %.16g\n",
adfGeoTransform[0],
adfGeoTransform[1],
adfGeoTransform[2],
adfGeoTransform[3],
adfGeoTransform[4],
adfGeoTransform[5] );
}
/* -------------------------------------------------------------------- */
/* Report GCPs. */
/* -------------------------------------------------------------------- */
if( bShowGCPs && GDALGetGCPCount( hDataset ) > 0 )
{
if (GDALGetGCPProjection(hDataset) != NULL)
{
OGRSpatialReferenceH hSRS;
char *pszProjection;
pszProjection = (char *) GDALGetGCPProjection( hDataset );
hSRS = OSRNewSpatialReference(NULL);
if( OSRImportFromWkt( hSRS, &pszProjection ) == CE_None )
{
char *pszPrettyWkt = NULL;
OSRExportToPrettyWkt( hSRS, &pszPrettyWkt, FALSE );
printf( "GCP Projection = \n%s\n", pszPrettyWkt );
CPLFree( pszPrettyWkt );
}
else
printf( "GCP Projection = %s\n",
GDALGetGCPProjection( hDataset ) );
OSRDestroySpatialReference( hSRS );
}
for( i = 0; i < GDALGetGCPCount(hDataset); i++ )
{
const GDAL_GCP *psGCP;
psGCP = GDALGetGCPs( hDataset ) + i;
printf( "GCP[%3d]: Id=%s, Info=%s\n"
" (%.15g,%.15g) -> (%.15g,%.15g,%.15g)\n",
i, psGCP->pszId, psGCP->pszInfo,
psGCP->dfGCPPixel, psGCP->dfGCPLine,
psGCP->dfGCPX, psGCP->dfGCPY, psGCP->dfGCPZ );
}
}
/* -------------------------------------------------------------------- */
/* Report metadata. */
/* -------------------------------------------------------------------- */
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hDataset, NULL ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( "Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
for( iMDD = 0; bShowMetadata && iMDD < CSLCount(papszExtraMDDomains); iMDD++ )
{
papszMetadata = GDALGetMetadata( hDataset, papszExtraMDDomains[iMDD] );
if( CSLCount(papszMetadata) > 0 )
{
printf( "Metadata (%s):\n", papszExtraMDDomains[iMDD]);
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
}
/* -------------------------------------------------------------------- */
/* Report "IMAGE_STRUCTURE" metadata. */
/* -------------------------------------------------------------------- */
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hDataset, "IMAGE_STRUCTURE" ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( "Image Structure Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Report subdatasets. */
/* -------------------------------------------------------------------- */
papszMetadata = GDALGetMetadata( hDataset, "SUBDATASETS" );
if( CSLCount(papszMetadata) > 0 )
{
printf( "Subdatasets:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Report geolocation. */
/* -------------------------------------------------------------------- */
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hDataset, "GEOLOCATION" ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( "Geolocation:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Report RPCs */
/* -------------------------------------------------------------------- */
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hDataset, "RPC" ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( "RPC Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Setup projected to lat/long transform if appropriate. */
/* -------------------------------------------------------------------- */
if( GDALGetGeoTransform( hDataset, adfGeoTransform ) == CE_None )
pszProjection = GDALGetProjectionRef(hDataset);
if( pszProjection != NULL && strlen(pszProjection) > 0 )
{
OGRSpatialReferenceH hProj, hLatLong = NULL;
hProj = OSRNewSpatialReference( pszProjection );
if( hProj != NULL )
hLatLong = OSRCloneGeogCS( hProj );
if( hLatLong != NULL )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
hTransform = OCTNewCoordinateTransformation( hProj, hLatLong );
CPLPopErrorHandler();
OSRDestroySpatialReference( hLatLong );
}
if( hProj != NULL )
OSRDestroySpatialReference( hProj );
}
/* -------------------------------------------------------------------- */
/* Report corners. */
/* -------------------------------------------------------------------- */
printf( "Corner Coordinates:\n" );
GDALInfoReportCorner( hDataset, hTransform, "Upper Left",
0.0, 0.0 );
GDALInfoReportCorner( hDataset, hTransform, "Lower Left",
0.0, GDALGetRasterYSize(hDataset));
GDALInfoReportCorner( hDataset, hTransform, "Upper Right",
GDALGetRasterXSize(hDataset), 0.0 );
GDALInfoReportCorner( hDataset, hTransform, "Lower Right",
GDALGetRasterXSize(hDataset),
GDALGetRasterYSize(hDataset) );
GDALInfoReportCorner( hDataset, hTransform, "Center",
GDALGetRasterXSize(hDataset)/2.0,
GDALGetRasterYSize(hDataset)/2.0 );
if( hTransform != NULL )
{
OCTDestroyCoordinateTransformation( hTransform );
hTransform = NULL;
}
/* ==================================================================== */
/* Loop over bands. */
/* ==================================================================== */
for( iBand = 0; iBand < GDALGetRasterCount( hDataset ); iBand++ )
{
double dfMin, dfMax, adfCMinMax[2], dfNoData;
int bGotMin, bGotMax, bGotNodata, bSuccess;
int nBlockXSize, nBlockYSize, nMaskFlags;
double dfMean, dfStdDev;
GDALColorTableH hTable;
CPLErr eErr;
hBand = GDALGetRasterBand( hDataset, iBand+1 );
if( bSample )
{
float afSample[10000];
int nCount;
nCount = GDALGetRandomRasterSample( hBand, 10000, afSample );
printf( "Got %d samples.\n", nCount );
}
GDALGetBlockSize( hBand, &nBlockXSize, &nBlockYSize );
printf( "Band %d Block=%dx%d Type=%s, ColorInterp=%s\n", iBand+1,
nBlockXSize, nBlockYSize,
GDALGetDataTypeName(
GDALGetRasterDataType(hBand)),
GDALGetColorInterpretationName(
GDALGetRasterColorInterpretation(hBand)) );
if( GDALGetDescription( hBand ) != NULL
&& strlen(GDALGetDescription( hBand )) > 0 )
printf( " Description = %s\n", GDALGetDescription(hBand) );
dfMin = GDALGetRasterMinimum( hBand, &bGotMin );
dfMax = GDALGetRasterMaximum( hBand, &bGotMax );
if( bGotMin || bGotMax || bComputeMinMax )
{
printf( " " );
if( bGotMin )
printf( "Min=%.3f ", dfMin );
if( bGotMax )
printf( "Max=%.3f ", dfMax );
if( bComputeMinMax )
{
CPLErrorReset();
GDALComputeRasterMinMax( hBand, FALSE, adfCMinMax );
if (CPLGetLastErrorType() == CE_None)
{
printf( " Computed Min/Max=%.3f,%.3f",
adfCMinMax[0], adfCMinMax[1] );
}
}
printf( "\n" );
}
eErr = GDALGetRasterStatistics( hBand, bApproxStats, bStats,
&dfMin, &dfMax, &dfMean, &dfStdDev );
if( eErr == CE_None )
{
printf( " Minimum=%.3f, Maximum=%.3f, Mean=%.3f, StdDev=%.3f\n",
dfMin, dfMax, dfMean, dfStdDev );
}
if( bReportHistograms )
{
int nBucketCount, *panHistogram = NULL;
eErr = GDALGetDefaultHistogram( hBand, &dfMin, &dfMax,
&nBucketCount, &panHistogram,
TRUE, GDALTermProgress, NULL );
if( eErr == CE_None )
{
int iBucket;
printf( " %d buckets from %g to %g:\n ",
nBucketCount, dfMin, dfMax );
for( iBucket = 0; iBucket < nBucketCount; iBucket++ )
printf( "%d ", panHistogram[iBucket] );
printf( "\n" );
CPLFree( panHistogram );
}
}
if ( bComputeChecksum)
{
printf( " Checksum=%d\n",
GDALChecksumImage(hBand, 0, 0,
GDALGetRasterXSize(hDataset),
GDALGetRasterYSize(hDataset)));
}
dfNoData = GDALGetRasterNoDataValue( hBand, &bGotNodata );
if( bGotNodata )
{
printf( " NoData Value=%.18g\n", dfNoData );
}
if( GDALGetOverviewCount(hBand) > 0 )
{
int iOverview;
printf( " Overviews: " );
for( iOverview = 0;
iOverview < GDALGetOverviewCount(hBand);
iOverview++ )
{
GDALRasterBandH hOverview;
const char *pszResampling = NULL;
if( iOverview != 0 )
printf( ", " );
hOverview = GDALGetOverview( hBand, iOverview );
printf( "%dx%d",
GDALGetRasterBandXSize( hOverview ),
GDALGetRasterBandYSize( hOverview ) );
pszResampling =
GDALGetMetadataItem( hOverview, "RESAMPLING", "" );
if( pszResampling != NULL
&& EQUALN(pszResampling,"AVERAGE_BIT2",12) )
printf( "*" );
}
printf( "\n" );
if ( bComputeChecksum)
{
printf( " Overviews checksum: " );
for( iOverview = 0;
iOverview < GDALGetOverviewCount(hBand);
iOverview++ )
{
GDALRasterBandH hOverview;
if( iOverview != 0 )
printf( ", " );
hOverview = GDALGetOverview( hBand, iOverview );
printf( "%d",
GDALChecksumImage(hOverview, 0, 0,
GDALGetRasterBandXSize(hOverview),
GDALGetRasterBandYSize(hOverview)));
}
printf( "\n" );
}
}
if( GDALHasArbitraryOverviews( hBand ) )
{
printf( " Overviews: arbitrary\n" );
}
nMaskFlags = GDALGetMaskFlags( hBand );
if( (nMaskFlags & (GMF_NODATA|GMF_ALL_VALID)) == 0 )
{
GDALRasterBandH hMaskBand = GDALGetMaskBand(hBand) ;
printf( " Mask Flags: " );
if( nMaskFlags & GMF_PER_DATASET )
printf( "PER_DATASET " );
if( nMaskFlags & GMF_ALPHA )
printf( "ALPHA " );
if( nMaskFlags & GMF_NODATA )
printf( "NODATA " );
if( nMaskFlags & GMF_ALL_VALID )
printf( "ALL_VALID " );
printf( "\n" );
if( hMaskBand != NULL &&
GDALGetOverviewCount(hMaskBand) > 0 )
{
int iOverview;
printf( " Overviews of mask band: " );
for( iOverview = 0;
iOverview < GDALGetOverviewCount(hMaskBand);
iOverview++ )
{
GDALRasterBandH hOverview;
if( iOverview != 0 )
printf( ", " );
hOverview = GDALGetOverview( hMaskBand, iOverview );
printf( "%dx%d",
GDALGetRasterBandXSize( hOverview ),
GDALGetRasterBandYSize( hOverview ) );
}
printf( "\n" );
}
}
if( strlen(GDALGetRasterUnitType(hBand)) > 0 )
{
printf( " Unit Type: %s\n", GDALGetRasterUnitType(hBand) );
}
if( GDALGetRasterCategoryNames(hBand) != NULL )
{
char **papszCategories = GDALGetRasterCategoryNames(hBand);
int i;
printf( " Categories:\n" );
for( i = 0; papszCategories[i] != NULL; i++ )
printf( " %3d: %s\n", i, papszCategories[i] );
}
if( GDALGetRasterScale( hBand, &bSuccess ) != 1.0
|| GDALGetRasterOffset( hBand, &bSuccess ) != 0.0 )
printf( " Offset: %.15g, Scale:%.15g\n",
GDALGetRasterOffset( hBand, &bSuccess ),
GDALGetRasterScale( hBand, &bSuccess ) );
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hBand, NULL ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( " Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
papszMetadata = (bShowMetadata) ? GDALGetMetadata( hBand, "IMAGE_STRUCTURE" ) : NULL;
if( bShowMetadata && CSLCount(papszMetadata) > 0 )
{
printf( " Image Structure Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
if( GDALGetRasterColorInterpretation(hBand) == GCI_PaletteIndex
&& (hTable = GDALGetRasterColorTable( hBand )) != NULL )
{
int i;
printf( " Color Table (%s with %d entries)\n",
GDALGetPaletteInterpretationName(
GDALGetPaletteInterpretation( hTable )),
GDALGetColorEntryCount( hTable ) );
if (bShowColorTable)
{
for( i = 0; i < GDALGetColorEntryCount( hTable ); i++ )
{
GDALColorEntry sEntry;
GDALGetColorEntryAsRGB( hTable, i, &sEntry );
printf( " %3d: %d,%d,%d,%d\n",
i,
sEntry.c1,
sEntry.c2,
sEntry.c3,
sEntry.c4 );
}
}
}
if( bShowRAT && GDALGetDefaultRAT( hBand ) != NULL )
{
GDALRasterAttributeTableH hRAT = GDALGetDefaultRAT( hBand );
GDALRATDumpReadable( hRAT, NULL );
}
}
GDALClose( hDataset );
CSLDestroy( papszExtraMDDomains );
CSLDestroy( argv );
GDALDumpOpenDatasets( stderr );
GDALDestroyDriverManager();
CPLDumpSharedList( NULL );
CPLCleanupTLS();
exit( 0 );
}
int main( int argc, char ** argv )
{
GDALDatasetH hDataset;
GDALRasterBandH hBand;
int i, iBand;
double adfGeoTransform[6];
GDALDriverH hDriver;
char **papszMetadata;
int bComputeMinMax = FALSE;
if( !GDALBridgeInitialize( "..", stderr ) )
{
fprintf( stderr, "Unable to intiailize GDAL bridge.\n" );
exit( 10 );
}
if( argc > 1 && strcmp(argv[1],"-mm") == 0 )
{
bComputeMinMax = TRUE;
argv++;
}
GDALAllRegister();
hDataset = GDALOpen( argv[1], GA_ReadOnly );
if( hDataset == NULL )
{
fprintf( stderr,
"GDALOpen failed - %d\n%s\n",
CPLGetLastErrorNo(), CPLGetLastErrorMsg() );
exit( 1 );
}
/* -------------------------------------------------------------------- */
/* Report general info. */
/* -------------------------------------------------------------------- */
hDriver = GDALGetDatasetDriver( hDataset );
printf( "Driver: %s/%s\n",
GDALGetDriverShortName( hDriver ),
GDALGetDriverLongName( hDriver ) );
printf( "Size is %d, %d\n",
GDALGetRasterXSize( hDataset ),
GDALGetRasterYSize( hDataset ) );
/* -------------------------------------------------------------------- */
/* Report projection. */
/* -------------------------------------------------------------------- */
if( GDALGetProjectionRef( hDataset ) != NULL )
{
OGRSpatialReferenceH hSRS;
char *pszProjection;
pszProjection = (char *) GDALGetProjectionRef( hDataset );
hSRS = OSRNewSpatialReference(NULL);
if( OSRImportFromWkt( hSRS, &pszProjection ) == CE_None )
{
char *pszPrettyWkt = NULL;
OSRExportToPrettyWkt( hSRS, &pszPrettyWkt, FALSE );
printf( "Coordinate System is:\n%s\n", pszPrettyWkt );
}
else
printf( "Coordinate System is `%s'\n",
GDALGetProjectionRef( hDataset ) );
OSRDestroySpatialReference( hSRS );
}
/* -------------------------------------------------------------------- */
/* Report Geotransform. */
/* -------------------------------------------------------------------- */
if( GDALGetGeoTransform( hDataset, adfGeoTransform ) == CE_None )
{
printf( "Origin = (%.6f,%.6f)\n",
adfGeoTransform[0], adfGeoTransform[3] );
printf( "Pixel Size = (%.6f,%.6f)\n",
adfGeoTransform[1], adfGeoTransform[5] );
}
/* -------------------------------------------------------------------- */
/* Report GCPs. */
/* -------------------------------------------------------------------- */
if( GDALGetGCPCount( hDataset ) > 0 )
{
printf( "GCP Projection = %s\n", GDALGetGCPProjection(hDataset) );
for( i = 0; i < GDALGetGCPCount(hDataset); i++ )
{
const GDAL_GCP *psGCP;
psGCP = GDALGetGCPs( hDataset ) + i;
printf( "GCP[%3d]: Id=%s, Info=%s\n"
" (%g,%g) -> (%g,%g,%g)\n",
i, psGCP->pszId, psGCP->pszInfo,
psGCP->dfGCPPixel, psGCP->dfGCPLine,
psGCP->dfGCPX, psGCP->dfGCPY, psGCP->dfGCPZ );
}
}
/* -------------------------------------------------------------------- */
/* Report metadata. */
/* -------------------------------------------------------------------- */
papszMetadata = GDALGetMetadata( hDataset, NULL );
if( papszMetadata != NULL )
{
printf( "Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Report subdatasets. */
/* -------------------------------------------------------------------- */
papszMetadata = GDALGetMetadata( hDataset, "SUBDATASETS" );
if( papszMetadata != NULL )
{
printf( "Subdatasets:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
/* -------------------------------------------------------------------- */
/* Report corners. */
/* -------------------------------------------------------------------- */
printf( "Corner Coordinates:\n" );
GDALInfoReportCorner( hDataset, "Upper Left",
0.0, 0.0 );
GDALInfoReportCorner( hDataset, "Lower Left",
0.0, GDALGetRasterYSize(hDataset));
GDALInfoReportCorner( hDataset, "Upper Right",
GDALGetRasterXSize(hDataset), 0.0 );
GDALInfoReportCorner( hDataset, "Lower Right",
GDALGetRasterXSize(hDataset),
GDALGetRasterYSize(hDataset) );
GDALInfoReportCorner( hDataset, "Center",
GDALGetRasterXSize(hDataset)/2.0,
GDALGetRasterYSize(hDataset)/2.0 );
/* ==================================================================== */
/* Loop over bands. */
/* ==================================================================== */
for( iBand = 0; iBand < GDALGetRasterCount( hDataset ); iBand++ )
{
double dfMin, dfMax, adfCMinMax[2], dfNoData;
int bGotMin, bGotMax, bGotNodata;
int nBlockXSize, nBlockYSize;
hBand = GDALGetRasterBand( hDataset, iBand+1 );
GDALGetBlockSize( hBand, &nBlockXSize, &nBlockYSize );
printf( "Band %d Block=%dx%d Type=%d, ColorInterp=%d\n", iBand+1,
nBlockXSize, nBlockYSize,
GDALGetRasterDataType(hBand),
GDALGetRasterColorInterpretation(hBand) );
dfMin = GDALGetRasterMinimum( hBand, &bGotMin );
dfMax = GDALGetRasterMaximum( hBand, &bGotMax );
printf( " Min=%.3f/%d, Max=%.3f/%d", dfMin, bGotMin, dfMax, bGotMax);
if( bComputeMinMax )
{
GDALComputeRasterMinMax( hBand, TRUE, adfCMinMax );
printf( ", Computed Min/Max=%.3f,%.3f",
adfCMinMax[0], adfCMinMax[1] );
}
printf( "\n" );
dfNoData = GDALGetRasterNoDataValue( hBand, &bGotNodata );
if( bGotNodata )
{
printf( " NoData Value=%g\n", dfNoData );
}
if( GDALGetOverviewCount(hBand) > 0 )
{
int iOverview;
printf( " Overviews: " );
for( iOverview = 0;
iOverview < GDALGetOverviewCount(hBand);
iOverview++ )
{
GDALRasterBandH hOverview;
if( iOverview != 0 )
printf( ", " );
hOverview = GDALGetOverview( hBand, iOverview );
printf( "%dx%d",
GDALGetRasterBandXSize( hOverview ),
GDALGetRasterBandYSize( hOverview ) );
}
printf( "\n" );
}
papszMetadata = GDALGetMetadata( hBand, NULL );
if( papszMetadata != NULL )
{
printf( "Metadata:\n" );
for( i = 0; papszMetadata[i] != NULL; i++ )
{
printf( " %s\n", papszMetadata[i] );
}
}
if( GDALGetRasterColorInterpretation(hBand) == GCI_PaletteIndex )
{
GDALColorTableH hTable;
int i;
hTable = GDALGetRasterColorTable( hBand );
printf( " Color Table (%s with %d entries)\n",
GDALGetPaletteInterpretationName(
GDALGetPaletteInterpretation( hTable )),
GDALGetColorEntryCount( hTable ) );
for( i = 0; i < GDALGetColorEntryCount( hTable ); i++ )
{
GDALColorEntry sEntry;
GDALGetColorEntryAsRGB( hTable, i, &sEntry );
printf( " %3d: %d,%d,%d,%d\n",
i,
sEntry.c1,
sEntry.c2,
sEntry.c3,
sEntry.c4 );
}
}
}
GDALClose( hDataset );
exit( 0 );
}
QList< QgsRelief::ReliefColor > QgsRelief::calculateOptimizedReliefClasses()
{
QList< QgsRelief::ReliefColor > resultList;
int nCellsX, nCellsY;
GDALDatasetH inputDataset = openInputFile( nCellsX, nCellsY );
if ( !inputDataset )
{
return resultList;
}
//open first raster band for reading (elevation raster is always single band)
GDALRasterBandH elevationBand = GDALGetRasterBand( inputDataset, 1 );
if ( !elevationBand )
{
GDALClose( inputDataset );
return resultList;
}
//1. get minimum and maximum of elevation raster -> 252 elevation classes
int minOk, maxOk;
double minMax[2];
minMax[0] = GDALGetRasterMinimum( elevationBand, &minOk );
minMax[1] = GDALGetRasterMaximum( elevationBand, &maxOk );
if ( !minOk || !maxOk )
{
GDALComputeRasterMinMax( elevationBand, true, minMax );
}
//2. go through raster cells and get frequency of classes
//store elevation frequency in 256 elevation classes
double frequency[252];
double frequencyClassRange = ( minMax[1] - minMax[0] ) / 252.0;
//initialize to zero
for ( int i = 0; i < 252; ++i )
{
frequency[i] = 0;
}
float *scanLine = ( float * ) CPLMalloc( sizeof( float ) * nCellsX );
int elevationClass = -1;
for ( int i = 0; i < nCellsY; ++i )
{
if ( GDALRasterIO( elevationBand, GF_Read, 0, i, nCellsX, 1,
scanLine, nCellsX, 1, GDT_Float32,
0, 0 ) != CE_None )
{
QgsDebugMsg( "Raster IO Error" );
}
for ( int j = 0; j < nCellsX; ++j )
{
elevationClass = frequencyClassForElevation( scanLine[j], minMax[0], frequencyClassRange );
if ( elevationClass < 0 )
{
elevationClass = 0;
}
else if ( elevationClass >= 252 )
{
elevationClass = 251;
}
frequency[elevationClass] += 1.0;
}
}
CPLFree( scanLine );
//log10 transformation for all frequency values
for ( int i = 0; i < 252; ++i )
{
frequency[i] = std::log10( frequency[i] );
}
//start with 9 uniformly distributed classes
QList<int> classBreaks;
classBreaks.append( 0 );
classBreaks.append( 28 );
classBreaks.append( 56 );
classBreaks.append( 84 );
classBreaks.append( 112 );
classBreaks.append( 140 );
classBreaks.append( 168 );
classBreaks.append( 196 );
classBreaks.append( 224 );
classBreaks.append( 252 );
for ( int i = 0; i < 10; ++i )
{
optimiseClassBreaks( classBreaks, frequency );
}
//debug, print out all the classbreaks
for ( int i = 0; i < classBreaks.size(); ++i )
{
qWarning( "%d", classBreaks[i] );
}
//set colors according to optimised class breaks
QVector<QColor> colorList;
colorList.push_back( QColor( 7, 165, 144 ) );
colorList.push_back( QColor( 12, 221, 162 ) );
colorList.push_back( QColor( 33, 252, 183 ) );
colorList.push_back( QColor( 247, 252, 152 ) );
colorList.push_back( QColor( 252, 196, 8 ) );
colorList.push_back( QColor( 252, 166, 15 ) );
colorList.push_back( QColor( 175, 101, 15 ) );
colorList.push_back( QColor( 255, 133, 92 ) );
colorList.push_back( QColor( 204, 204, 204 ) );
resultList.reserve( classBreaks.size() );
for ( int i = 1; i < classBreaks.size(); ++i )
{
double minElevation = minMax[0] + classBreaks[i - 1] * frequencyClassRange;
double maxElevation = minMax[0] + classBreaks[i] * frequencyClassRange;
resultList.push_back( QgsRelief::ReliefColor( colorList.at( i - 1 ), minElevation, maxElevation ) );
}
return resultList;
}
//this function is mainly there for debugging
bool QgsRelief::exportFrequencyDistributionToCsv( const QString &file )
{
int nCellsX, nCellsY;
GDALDatasetH inputDataset = openInputFile( nCellsX, nCellsY );
if ( !inputDataset )
{
return false;
}
//open first raster band for reading (elevation raster is always single band)
GDALRasterBandH elevationBand = GDALGetRasterBand( inputDataset, 1 );
if ( !elevationBand )
{
GDALClose( inputDataset );
return false;
}
//1. get minimum and maximum of elevation raster -> 252 elevation classes
int minOk, maxOk;
double minMax[2];
minMax[0] = GDALGetRasterMinimum( elevationBand, &minOk );
minMax[1] = GDALGetRasterMaximum( elevationBand, &maxOk );
if ( !minOk || !maxOk )
{
GDALComputeRasterMinMax( elevationBand, true, minMax );
}
//2. go through raster cells and get frequency of classes
//store elevation frequency in 256 elevation classes
double frequency[252];
double frequencyClassRange = ( minMax[1] - minMax[0] ) / 252.0;
//initialize to zero
for ( int i = 0; i < 252; ++i )
{
frequency[i] = 0;
}
float *scanLine = ( float * ) CPLMalloc( sizeof( float ) * nCellsX );
int elevationClass = -1;
for ( int i = 0; i < nCellsY; ++i )
{
if ( GDALRasterIO( elevationBand, GF_Read, 0, i, nCellsX, 1,
scanLine, nCellsX, 1, GDT_Float32,
0, 0 ) != CE_None )
{
QgsDebugMsg( "Raster IO Error" );
}
for ( int j = 0; j < nCellsX; ++j )
{
elevationClass = frequencyClassForElevation( scanLine[j], minMax[0], frequencyClassRange );
if ( elevationClass >= 0 )
{
frequency[elevationClass] += 1.0;
}
}
}
CPLFree( scanLine );
//log10 transformation for all frequency values
for ( int i = 0; i < 252; ++i )
{
frequency[i] = std::log10( frequency[i] );
}
//write out frequency values to csv file for debugging
QFile outFile( file );
if ( !outFile.open( QIODevice::WriteOnly | QIODevice::Truncate ) )
{
return false;
}
QTextStream outstream( &outFile );
for ( int i = 0; i < 252; ++i )
{
outstream << QString::number( i ) + ',' + QString::number( frequency[i] ) << endl;
}
outFile.close();
return true;
}
int main(void)
{
GDALAllRegister();
/*Open a file*/
GDALDatasetH hDataset;
hDataset = GDALOpen( "./dem.tif", GA_ReadOnly );
if( hDataset == NULL ) printf("The dataset is NULL!\n");
/*Getting Dasetset Information*/
GDALDriverH hDriver;
double adfGeoTransform[6];
hDriver = GDALGetDatasetDriver( hDataset );
printf( "Driver: %s/%s\n",
GDALGetDriverShortName( hDriver ),
GDALGetDriverLongName( hDriver ));
printf("Size is %dx%dx%d\n",
GDALGetRasterXSize( hDataset ),
GDALGetRasterYSize( hDataset ),
GDALGetRasterCount( hDataset ));
if( GDALGetProjectionRef( hDataset ) != NULL )
printf("Projection is '%s'\n", GDALGetProjectionRef( hDataset ) );
if (GDALGetGeoTransform( hDataset, adfGeoTransform ) == CE_None )
{
printf("Origin = (%.6f,%.6f)\n",
adfGeoTransform[0], adfGeoTransform[3]);
printf( "Pixel Size = (%.6f,%.6f)\n",
adfGeoTransform[0], adfGeoTransform[5]);
}
/*Fetching a Raster Band*/
GDALRasterBandH hBand;
int nBlockXSize, nBlockYSize;
int bGotMin, bGotMax;
double adfMinMax[2];
hBand = GDALGetRasterBand( hDataset, 1);
GDALGetBlockSize( hBand, &nBlockXSize, &nBlockYSize);
printf( "Block=%dx%d Type=%s, ColorInterp=%s\n",
nBlockXSize, nBlockYSize,
GDALGetDataTypeName(GDALGetRasterDataType(hBand)),
GDALGetColorInterpretationName(
GDALGetRasterColorInterpretation(hBand)) );
adfMinMax[0] = GDALGetRasterMinimum( hBand, &bGotMin );
adfMinMax[1] = GDALGetRasterMaximum( hBand, &bGotMax );
if( !(bGotMin && bGotMax) )
{
GDALComputeRasterMinMax( hBand, TRUE, adfMinMax );
}
printf( "Min=%.3fd, Max=%.3f\n", adfMinMax[0], adfMinMax[1]);
if(GDALGetOverviewCount(hBand) > 0)
printf( "Band has %d overviews.\n", GDALGetOverviewCount(hBand));
if( GDALGetRasterColorTable( hBand ) != NULL)
printf( "Band has a color table with %d entries.\n",
GDALGetColorEntryCount(
GDALGetRasterColorTable( hBand)));
/*Reading Raster Data*/
float *pafScanline;
int nXSize = GDALGetRasterBandXSize( hBand );
pafScanline = (float *)CPLMalloc(sizeof(float)*nXSize);
GDALRasterIO(hBand, GF_Read, 0, 0, nXSize, 1,
pafScanline, nXSize, 1, GDT_Float32, 0, 0);
CPLFree(pafScanline);
return 0;
}
void toprsGadlReader::computeMinMax()
{
toprs_uint32 bands = GDALGetRasterCount(theDataset);
if(theMinPixValues)
{
delete [] theMinPixValues;
theMinPixValues = 0;
}
if(theMaxPixValues)
{
delete [] theMaxPixValues;
theMaxPixValues = 0;
}
if(theNullPixValues)
{
delete [] theNullPixValues;
theNullPixValues = 0;
}
if(isIndexTo3Band())
{
int i = 0;
theMinPixValues = new double[3];
theMaxPixValues = new double[3];
theNullPixValues = new double[3];
for(i = 0; i < 3; ++i)
{
theMinPixValues[i] = 1;
theMaxPixValues[i] = 255;
theNullPixValues[i] = 0;
}
}
else if(isIndexTo1Band())
{
theMinPixValues = new double[1];
theMaxPixValues = new double[1];
theNullPixValues = new double[1];
*theNullPixValues = 0;
*theMaxPixValues = 255;
*theMinPixValues = 1;
}
else
{
if(!theMinPixValues && !theMaxPixValues&&bands)
{
theMinPixValues = new double[bands];
theMaxPixValues = new double[bands];
theNullPixValues = new double[bands];
}
for(toprs_int32 band = 0; band < (toprs_int32)bands; ++band)
{
GDALRasterBandH aBand=0;
aBand = GDALGetRasterBand(theDataset, band+1);
int minOk=1;
int maxOk=1;
int nullOk=1;
if(aBand)
{
if(hasData())
{
theMinPixValues[band] = theData.getMinPix(band);
theMaxPixValues[band] = theData.getMaxPix(band);
theNullPixValues[band] = theData.getNullPix(band);
}
else
{
std::string driverName = theDriver ? GDALGetDriverShortName( theDriver ) : "";
// Allow to rescale the image data
// to the min/max values found in the raster data only
// if it was not acquired with the following drivers:
if ( driverName.find("JP2KAK") != std::string::npos ||
driverName.find("JPEG2000") != std::string::npos||
driverName.find("NITF") != std::string::npos)
{
theMinPixValues[band] = toprs::defaultMin(getOutputScalarType());
theMaxPixValues[band] = toprs::defaultMax(getOutputScalarType());
theNullPixValues[band] = toprs::defaultNull(getOutputScalarType());
}
else
{
theMinPixValues[band] = GDALGetRasterMinimum(aBand, &minOk);
theMaxPixValues[band] = GDALGetRasterMaximum(aBand, &maxOk);
theNullPixValues[band] = GDALGetRasterNoDataValue(aBand, &nullOk);
}
if((!nullOk)||(theNullPixValues[band] < toprs::defaultNull(getOutputScalarType())))
{
theNullPixValues[band] = toprs::defaultNull(getOutputScalarType());
}
}
if(!minOk||!maxOk)
{
theMinPixValues[band] = toprs::defaultMin(getOutputScalarType());
theMaxPixValues[band] = toprs::defaultMax(getOutputScalarType());
}
}
else
{
theMinPixValues[band] = toprs::defaultMin(getOutputScalarType());
theMaxPixValues[band] = toprs::defaultMax(getOutputScalarType());
}
}
}
}
/*
* POPULATE_METADATA_STRUCT
*
* This routine just queries the GDAL raster file for all the metadata
* that can be squeezed out of it.
*
* The resulting matlab structure is by necessity nested. Each raster
* file can have several bands, e.g. PNG files usually have 3, a red, a
* blue, and a green channel. Each band can have several overviews (tiffs
* come to mind here).
*
* Fields:
* ProjectionRef: a string describing the projection. Not parsed.
* GeoTransform:
* a 6-tuple. Entries are as follows.
* [0] --> top left x
* [1] --> w-e pixel resolution
* [2] --> rotation, 0 if image is "north up"
* [3] --> top left y
* [4] --> rotation, 0 if image is "north up"
* [5] --> n-s pixel resolution
*
* DriverShortName: describes the driver used to query *this* raster file
* DriverLongName: describes the driver used to query *this* raster file
* RasterXSize, RasterYSize:
* These are the primary dimensions of the raster. See "Overview", though.
* RasterCount:
* Number of raster bands present in the file.
* Driver:
* This itself is a structure array. Each element describes a driver
* that the locally compiled GDAL library has available. So you recompile
* GDAL with new format support, this structure will change.
*
* Fields:
* DriverShortName, DriverLongName:
* Same as fields in top level structure with same name.
*
* Band:
* Also a structure array. One element for each raster band present in
* the GDAL file. See "RasterCount".
*
* Fields:
* XSize, YSize:
* Dimensions of the current raster band.
* Overview:
* A structure array, one element for each overview present. If
* empty, then there are no overviews.
* NoDataValue:
* When passed back to MATLAB, one can set pixels with this value to NaN.
* ColorMap:
* A Mx3 double array with the colormap, or empty if it does not exists
*
* */
mxArray *populate_metadata_struct (GDALDatasetH hDataset, int correct_bounds) {
/* These are used to define the metadata structure about available GDAL drivers. */
mxArray *mxtmp;
mxArray *mxProjectionRef;
mxArray *mxGeoTransform;
mxArray *mxGDALDriverShortName;
mxArray *mxGDALDriverLongName;
mxArray *mxGDALRasterCount;
mxArray *mxGDALRasterXSize;
mxArray *mxGDALRasterYSize;
mxArray *mxCorners;
mxArray *mxGMT_header;
/*
* These will be matlab structures that hold the metadata.
* "metadata_struct" actually encompasses "band_struct",
* which encompasses "overview_struct"
* */
mxArray *metadata_struct;
mxArray *band_struct;
mxArray *overview_struct;
mxArray *corner_struct;
int overview, band_number; /* Loop indices */
double *dptr; /* short cut to the mxArray data */
double *dptr2; /* "" */
GDALDriverH hDriver; /* This is the driver chosen by the GDAL library to query the dataset. */
GDALRasterBandH hBand, overview_hBand;
int num_overview_fields; /* Number of metadata items for each overview structure. */
int status; /* success or failure */
double adfGeoTransform[6]; /* bounds on the dataset */
int num_overviews; /* Number of overviews in the current band. */
int num_struct_fields; /* number of fields in the metadata structures. */
int num_band_fields;
int num_corner_fields;
char *fieldnames[100]; /* this array contains the names of the fields of the metadata structure. */
char *band_fieldnames[100];
char *corner_fieldnames[100];
char *overview_fieldnames[100];
int xSize, ySize, raster_count; /* Dimensions of the dataset */
int gdal_type; /* Datatype of the bands. */
double tmpdble; /* temporary value */
double xy_c[2]; /* Corner coordinates */
int dims[2];
int bGotMin, bGotMax; /* To know if driver transmited Min/Max */
double adfMinMax[2]; /* Dataset Min Max */
double z_min = 1e50, z_max = -1e50;
/* Create the metadata structure. Just one element, with XXX fields. */
num_struct_fields = 10;
fieldnames[0] = strdup ("ProjectionRef");
fieldnames[1] = strdup ("GeoTransform");
fieldnames[2] = strdup ("DriverShortName");
fieldnames[3] = strdup ("DriverLongName");
fieldnames[4] = strdup ("RasterXSize");
fieldnames[5] = strdup ("RasterYSize");
fieldnames[6] = strdup ("RasterCount");
fieldnames[7] = strdup ("Band");
fieldnames[8] = strdup ("Corners");
fieldnames[9] = strdup("GMT_hdr");
metadata_struct = mxCreateStructMatrix ( 1, 1, num_struct_fields, (const char **)fieldnames );
/* Record the ProjectionRef. */
mxProjectionRef = mxCreateString ( GDALGetProjectionRef( hDataset ) );
mxSetField ( metadata_struct, 0, "ProjectionRef", mxProjectionRef );
/* Record the geotransform. */
mxGeoTransform = mxCreateNumericMatrix ( 6, 1, mxDOUBLE_CLASS, mxREAL );
dptr = mxGetPr ( mxGeoTransform );
if( GDALGetGeoTransform( hDataset, adfGeoTransform ) == CE_None ) {
dptr[0] = adfGeoTransform[0];
dptr[1] = adfGeoTransform[1];
dptr[2] = adfGeoTransform[2];
dptr[3] = adfGeoTransform[3];
dptr[4] = adfGeoTransform[4];
dptr[5] = adfGeoTransform[5];
mxSetField ( metadata_struct, 0, "GeoTransform", mxGeoTransform );
}
/* Get driver information */
hDriver = GDALGetDatasetDriver( hDataset );
mxGDALDriverShortName = mxCreateString ( GDALGetDriverShortName( hDriver ) );
mxSetField ( metadata_struct, 0, (const char *) "DriverShortName", mxGDALDriverShortName );
mxGDALDriverLongName = mxCreateString ( GDALGetDriverLongName( hDriver ) );
mxSetField ( metadata_struct, 0, (const char *) "DriverLongName", mxGDALDriverLongName );
xSize = GDALGetRasterXSize( hDataset );
ySize = GDALGetRasterYSize( hDataset );
mxGDALRasterXSize = mxCreateDoubleScalar ( (double) xSize );
mxSetField ( metadata_struct, 0, (const char *) "RasterXSize", mxGDALRasterXSize );
mxGDALRasterYSize = mxCreateDoubleScalar ( (double) ySize );
mxSetField ( metadata_struct, 0, (const char *) "RasterYSize", mxGDALRasterYSize );
raster_count = GDALGetRasterCount( hDataset );
mxGDALRasterCount = mxCreateDoubleScalar ( (double)raster_count );
mxSetField ( metadata_struct, 0, (const char *) "RasterCount", mxGDALRasterCount );
/* Get the metadata for each band. */
num_band_fields = 5;
band_fieldnames[0] = strdup ( "XSize" );
band_fieldnames[1] = strdup ( "YSize" );
band_fieldnames[2] = strdup ( "Overview" );
band_fieldnames[3] = strdup ( "NoDataValue" );
band_fieldnames[4] = strdup ( "DataType" );
band_struct = mxCreateStructMatrix ( raster_count, 1, num_band_fields, (const char **)band_fieldnames );
num_overview_fields = 2;
overview_fieldnames[0] = strdup ( "XSize" );
overview_fieldnames[1] = strdup ( "YSize" );
for ( band_number = 1; band_number <= raster_count; ++band_number ) { /* Loop over bands */
hBand = GDALGetRasterBand( hDataset, band_number );
mxtmp = mxCreateDoubleScalar ( (double) GDALGetRasterBandXSize( hBand ) );
mxSetField ( band_struct, 0, "XSize", mxtmp );
mxtmp = mxCreateDoubleScalar ( (double) GDALGetRasterBandYSize( hBand ) );
mxSetField ( band_struct, 0, "YSize", mxtmp );
gdal_type = GDALGetRasterDataType ( hBand );
mxtmp = mxCreateString ( GDALGetDataTypeName ( (GDALDataType)gdal_type ) );
mxSetField ( band_struct, 0, (const char *) "DataType", mxtmp );
tmpdble = GDALGetRasterNoDataValue ( hBand, &status );
mxtmp = mxCreateDoubleScalar ( (double) (GDALGetRasterNoDataValue ( hBand, &status ) ) );
mxSetField ( band_struct, 0, "NoDataValue", mxtmp );
num_overviews = GDALGetOverviewCount( hBand ); /* Can have multiple overviews per band. */
if ( num_overviews > 0 ) {
overview_struct = mxCreateStructMatrix ( num_overviews, 1, num_overview_fields,
(const char **)overview_fieldnames );
for ( overview = 0; overview < num_overviews; ++overview ) {
overview_hBand = GDALGetOverview ( hBand, overview );
xSize = GDALGetRasterBandXSize ( overview_hBand );
mxtmp = mxCreateDoubleScalar ( xSize );
mxSetField ( overview_struct, overview, "XSize", mxtmp );
ySize = GDALGetRasterBandYSize ( overview_hBand );
mxtmp = mxCreateDoubleScalar ( ySize );
mxSetField ( overview_struct, overview, "YSize", mxtmp );
}
mxSetField ( band_struct, 0, "Overview", overview_struct );
}
}
mxSetField ( metadata_struct, 0, "Band", band_struct );
/* Record the GMT header. This will be interleaved with "corners" because they share somes values */
mxGMT_header = mxCreateNumericMatrix(1, 9, mxDOUBLE_CLASS, mxREAL);
dptr2 = mxGetPr(mxGMT_header);
/* Record corners. */
num_corner_fields = 4;
corner_fieldnames[0] = strdup ("LL");
corner_fieldnames[1] = strdup ("UL");
corner_fieldnames[2] = strdup ("UR");
corner_fieldnames[3] = strdup ("LR");
corner_struct = mxCreateStructMatrix(1, 1, num_corner_fields, (const char **)corner_fieldnames);
dims[0] = 1; dims[1] = 2;
ReportCorner(hDataset, 0.0, GDALGetRasterYSize(hDataset), xy_c); /* Lower Left */
mxCorners = mxCreateNumericArray (2,dims,mxDOUBLE_CLASS, mxREAL);
dptr = mxGetPr(mxCorners);
dptr[0] = xy_c[0]; dptr[1] = xy_c[1];
dptr2[0] = xy_c[0]; dptr2[2] = xy_c[1]; /* xmin, ymin */
mxSetField(corner_struct, 0, "LL", mxCorners );
ReportCorner(hDataset, 0.0, 0.0, xy_c); /* Upper Left */
mxCorners = mxCreateNumericArray (2,dims,mxDOUBLE_CLASS, mxREAL);
dptr = mxGetPr(mxCorners);
dptr[0] = xy_c[0]; dptr[1] = xy_c[1];
mxSetField(corner_struct, 0, "UL", mxCorners );
ReportCorner(hDataset, GDALGetRasterXSize(hDataset), 0.0, xy_c); /* Upper Rigt */
mxCorners = mxCreateNumericArray (2,dims,mxDOUBLE_CLASS, mxREAL);
dptr = mxGetPr(mxCorners);
dptr[0] = xy_c[0]; dptr[1] = xy_c[1];
dptr2[1] = xy_c[0]; dptr2[3] = xy_c[1]; /* xmax, ymax */
mxSetField(corner_struct, 0, "UR", mxCorners );
ReportCorner(hDataset, GDALGetRasterXSize(hDataset), GDALGetRasterYSize(hDataset), xy_c); /* Lower Rigt */
mxCorners = mxCreateNumericArray (2,dims,mxDOUBLE_CLASS, mxREAL);
dptr = mxGetPr(mxCorners);
dptr[0] = xy_c[0]; dptr[1] = xy_c[1];
mxSetField(corner_struct, 0, "LR", mxCorners );
mxSetField (metadata_struct, 0, "Corners", corner_struct);
/* Fill in the rest of the GMT header values */
if (z_min == 1e50) { /* We don't know yet the dataset Min/Max */
adfMinMax[0] = GDALGetRasterMinimum( hBand, &bGotMin );
adfMinMax[1] = GDALGetRasterMaximum( hBand, &bGotMax );
if(!(bGotMin && bGotMax))
GDALComputeRasterMinMax( hBand, TRUE, adfMinMax );
dptr2[4] = adfMinMax[0];
dptr2[5] = adfMinMax[1];
}
else {
dptr2[4] = z_min;
dptr2[5] = z_max;
}
dptr2[6] = 0;
dptr2[7] = adfGeoTransform[1];
dptr2[8] = fabs(adfGeoTransform[5]);
if (correct_bounds) {
dptr2[0] += dptr2[7] / 2; dptr2[1] -= dptr2[7] / 2;
dptr2[2] += dptr2[8] / 2; dptr2[3] -= dptr2[8] / 2;
}
mxSetField (metadata_struct, 0, "GMT_hdr", mxGMT_header);
return ( metadata_struct );
}
