Hi, If there's a way to search the whole archive of this list in one go, please let me know.
Otherwise, can someone perhaps help me with this problem? I'm using the raster calculator in QGIS 1.8.0 on Windows 7 to find the difference between two rasters. The two input rasters (ASC files) both have float32 datatypes and they have exactly the same spatial extent. The expression I use in the calculator is: med input@1 - low input@1 *med input* has a range from 0 to 5.5 *low input* has a range from 0 to 2.5 The result I get is a float32 output raster with zero everywhere. I have tried two different output formats - TIFF and IMG with the same result. I have also tried to add the two rasters, with the same result - zero everywhere. I imported the input rasters into GRASS, performed the calculation, got the correct result, and exported the output successfully to a TIFF file. Can anyone help me figure out why the raster calculator in QGIS is not giving the expected result? Thanks Hanlie
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