1

I have two DEMs. my plan is to subtract 1 DEM from the other and extract only the values that are greater than 1 and set values that are less than 1 to no data or null

I can do this in 3 steps but I would like this to be done in 1 query in the raster calculator

1. dem2 - dem1 #output = subtract_DEM
2. subtract_DEM >= 1 #output = subtract_DEM_grt1
3. SetNull(0, subtract_DEM_grt1) 

how can I compute this into one expression using the arcgis raster calculator

0

Just use Con function statement:

Con(('dem2'-'dem1')>=1,'dem2'-'dem1')

Check the result of subtraction of two DEMs:

enter image description here

Violet cell has a difference of 3; brown, 2; black, one; and whites spaces are Null values.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.