Jorge Arévalo wrote:
I'm talking about the nRasterXSize, nRasterYSize of a GDALDataset (this is what I mean with "size"). In the context of the GDAL WKT Raster driver, I can get the extent covered by a raster getting the "extent" column from RASTER_COLUMNS table. If I read this column like an OGRGeometry object, with an OGREnvelope, I can get the upper left coords (poE->MinX, poE->MinY?) and the extent of the raster. But I'm not sure if my operations are correct or there is a better way to do this
Jorge, Taking the width and height of the extent geometry envelope and then dividing by the pixel size values from RASTER_COLUMNS (pixelsize_x and pixelsize_y) will give you the width and height of the raster in pixels for regular_blocking rasters. Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected] light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
