Roger André wrote:
Hi All,I'm using the Python API to build some GeoTIFFs and would like to set the nodata value to -9999 at creation time. How do I do that? Below is a sample of my code def makeRaster(self): out_drv = gdal.GetDriverByName('GTiff') out_ds = out_drv.Create(self.raster_name, 4320, 2160 , 1, gdal.GDT_Float32) out_ds.SetGeoTransform([-180, 0.0833330, 0, 90, 0, -0.0833330]) out_band = numpy.zeros([out_ds.RasterYSize, out_ds.RasterXSize]) for iY in range(out_ds.RasterYSize): for iX in range(out_ds.RasterXSize): alloc_key = self.makeAllocKey(iY + 1, iX + 1) pixel_value = self.checkPixel(alloc_key) out_band[iY][iX] = pixel_value out_ds.GetRasterBand(1).WriteArray(out_band) out_ds = None
Roger, Try adding: out_ds.GetRasterBand(1).SetNoDataValue( -9999 ) after the WriteArray() (or anywhere after the Create() call I suppose). 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
