I am using ArcGIS Pro 2.4.

In the following equation, can "X" be replaced with the maximum cell value of another raster? Alternately, replacing "X" with a field from a table would work.

Con("udlen", 1, 0, "Value > X")

2 Answers 2


Yes. Raster objects have a maximum property. Just make sure statistics have been calculated for the raster or maximum will return None.


Con("my_raster.tif" > "other_raster.tif".maximum, value_if_true, value_if_false)
  • 1
    +1 never thought it's possible.
    – FelixIP
    Feb 11, 2020 at 5:19
  • Yes! Thank you user2856 - That solution worked perfectly!!
    – Jim-wy
    Feb 11, 2020 at 5:50
  • @FelixIP this has worked since ArcGIS10.0
    – user2856
    Feb 11, 2020 at 6:47

You could use the MAXIMUM argument in arcpy.GetRasterProperties_management() to get the highest cell value in the raster. See the documentation for Get Raster Properties (Data Management).

eg, x = arcpy.GetRasterProperties_management("udlen", "MAXIMUM")

Is that what you're after?

  • I'm using ModelBuilder and am hoping to populate the value within the raster calculator. I also have the option of creating a table with the max value and have been trying to figure out how to extract the data from the table. Looks like I need to step up my Python education - but I am hoping to do this within Model Builder for now.
    – Jim-wy
    Feb 11, 2020 at 5:09
  • The other answer from @user2856 looks like a better option, anyhow. Feb 11, 2020 at 5:12
  • Thank you - I'll be trying your solution in Python also, I appreciate the input!
    – Jim-wy
    Feb 11, 2020 at 5:51

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