I'm trying to understand how gdal_rasterize works. As a test I'm trying to convert a shapefile with all counties of the USA to a GeoTiff. I've added a field to the shapefile called myID which is equal to the shape number. The goal is to create a tiff with each county its own value.
This is my command: gdal_rasterize -a myID -l counties -of GTiff -a_nodata -999 -ts 800 800 counties.shp GDALRasterizeTest.tif I'm having trouble understanding the -ts or -tr parameters. Using the above command I get an 800*800 tiff which shows the USA, but it looks like all pixels are the same color. I would have expected I could set the cell size and the dimensions of the resulting tiff file would be equal to the input shapefile. I also tried creating an ASCII file so I could 'read' the values, but I can't figure out how to create an ASCII file. Any help will be much appreciated. Thanks, Paul
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