I have a couple rasters that have been atmospherically corrected using the "landsat.toar" tool in Grass. When these rasters are output and I open up their properties in ArcCatalog, the NoData Value under Raster Information is "-1.#IND". Any idea what this means? It also doesn't respond like normal NoData values, as I can't use tools like "Is Null" to identify it.
-1.#IND returns when an incorrect mathematical operation is done, like dividing by zero or the square root of a negative number. Maybe GRASS tool used standard deviation of NoData set as -9999.
I suggest two solutions:
- Check your source NoData value, if it is negative, change it to positive.
- If you cannot change it or if it's positive, you can convert your output into array, substitute the value using
numpy.when()and back again to raster.