Even, Thank you so much! This fixed my problem!
Thanks again, Sam > Sam, > >> >> I have a few questions with the GDALRasterize fuction. >> >> 1) How do I set the GDALRasterizeOptions? >> I have tried: >> >> /// Create the list of options. Use the same as found on the command >> line gdal_rasterize utility >> // http://www.gdal.org/gdal_rasterize.html >> char *options[] = { >> "-at", // All touched (all pixels touched by >> lines or polygons will be >> // updated, not just those whose >> center >> point is within the polygon) >> "-a_nodata", "-10", // Set the value to be >> used >> if there is no data >> "-tr", resolution_str, resolution_str, // >> Set >> the X and Y resolution (grid size) >> "-ot", dtype, // Set the output type (in >> this >> case we are using double) >> "-a", attribute, // Set which attribute you >> want to use to determines the raster's value >> "-te", xMin, yMin, xMax, yMax, // Set the >> X,Y >> bounds of the raster (i.e. touched extent) >> "-q" // Quiet option >> };/ > > You need to add a final NULL pointer at the end of the options[] array, > otherwise GDALRasterize() has no way to know where the array ends. > >> >> >> 2) I am want to read the file I created with the GDALRasterize function >> immediately. When I try to do that by passing in a filename into the >> const >> char *pszDest (GD/ALRasterize(rasterfile.c_str(), NULL, ds_shp, Options, >> NULL);/), the get the no data value is what is read. After the program >> is >> finished, I can read the file normally. Therefore I do not think the >> file is >> closing until after the program has exited. > > GDALRasterize() returns a dataset handle that you can potentially > immediately > use for reading its content with RasterIO().But at some point you > explicitly > need to GDALClose() it otherwise the dataset might not be completely > serialized to disk > > If you GDALOpen() this dataset before it has been closed, then you may > read a > partially flushed dataset. > > Even > > -- > Spatialys - Geospatial professional services > http://www.spatialys.com > _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
