The input raster contains only NoData cells. The operation requires that there be cells in the input with a value.
Following are potential solutions:
- Check the properties of the raster. A raster with all NoData cells does not have statistics. Use a valid raster as input.
- Display the raster and check that it looks correct.
- If the input raster looks good,compare the extents of the input raster and observer points. Also check whether an output extent or spatial reference is set in the environment and that it is compatible.