Habitat quality grid calculator

NatCap Software Support
#1

May I ask how to solve this problem:ValueError: The following land cover codes were found in your landcover rasters but not in your sensitivity table. Check your sensitivity table to see if they are missing: 0.

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I heard that you can use the grid calculator to remove 0 in arcgis, but after I did it, the problem in the picture still appeared. Could someone please teach me how to do it?

#2

Hi @SMZ,

Thanks for using InVEST and posting here. I’m curious if you actually want to remove 0 from the land cover raster or if you want to set it to nodata? If 0 is not a valid land cover code then I recommend setting it to the nodata value of the land cover raster. The model will properly handle nodata values.

Best,

Doug

#3

Hello, thank you very much for your answer, here is my situation: 0 is not a valid land cover code. So I used a grid calculator to assign it to nodata, as shown in Figure 1.image
However, this problem still occurs during operation, which is the content of the picture of the question I asked for the first time. How can I solve this problem?

#4

Hi @SMZ -

The command you show will change NoData to zero, so you will probably have a lot of 0 values in the resulting raster, which you can see in the raster attribute table, or when looking at Symbology or Min/Max values. You can use the Set Null or Reclass commands in ArcGIS to change 0 to NoData.

~ Stacie

#5

Thank you again, and this software, a great software. My problem has been solved. Before that, the value of 0 in my current land use type map has not been modified.