I have multiple rasters, which I reclassed to values from 0 to 10.

I weighted those rasters in "raster calculator" with my weight values and I obtained the correct values for each raster. Then I used the following formula in raster calculator:

"raster1" + "raster2" + "raster3" + so on

When I try to sum all these weighted rasters in raster calculator, I get the following values and no raster shows up: max: 3.400282e+38, min: -3.400282e+38

My sum values should be: max: 26,25 min: 4,15

All my rasters are in the same PCS and GCS. I tried to mix various extent settings but it didn't worked.

  • it's not a symbology issue and the values are not correct. It returned me no raster, just empty screen and wrong values. I need a raster made of all summed weighted_rasters to use for my suitability analysis.
    – gis1234
    Jan 28, 2022 at 10:37
  • Do you have nodata set in your rasters? Is it perhaps -3.400282e+38?
    – user30184
    Jan 28, 2022 at 10:52
  • 1
    Use Cell Statistics, with Overlay statistic = Sum and Ignore NoData = True (Checked).
    – user2856
    Jan 28, 2022 at 11:00
  • Thanks. I did it this way
    – gis1234
    Jan 28, 2022 at 11:06
  • Do you mean that your problem is solved?
    – user30184
    Jan 28, 2022 at 12:19

1 Answer 1


You probably have NoData values overlapping with your data values.

Use the Cell Statistics tool, with the following parameters:

  • Overlay statistic = Sum
  • Ignore NoData = True (Checked)

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