I wonder how to create a dynamic mask from a list of values. At the moment, I have it hardcoded as follows:

mask = (

However, I want the mask to be dynamically created based on a mask_values list. For example: mask_values = [10, 80, 50, 70, 90, 95, 100]

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2 Answers 2


You can interatively add property to your mask:

mask = clipped
for v in mask_values:
    mask = mask.And(clipped.neq(v))
mask = mask.selfMask()
  • Thank you very much! This works great. Aug 7 at 1:20

This will produce a 1 if any pixels match any values in the list. If you want it to be a 0 if any occur, then just .not() the result.

var mask = clipped.eq([10, 80, 50, 70, 90, 95, 100]).reduce(ee.Reducer.max())

The input list of values are automatically turned into a multiband image, and the input image is compared to each of those bands, producing a multiband image of 0/1s. The reduce then gets the max over all bands.

  • Thank you for the response! I am not sure how to apply .not() in python. "mask = clipped.eq([10, 80, 50, 70, 90, 95, 100]).reduce(ee.Reducer.max()).not()" doesn't work in terms of syntax Aug 7 at 1:20
  • I think you can simply use "neq" instead Aug 7 at 11:03
  • In Python not is a reserved keyword, so it's .Not() (capitalized). You could use neq() but you want to know that all are false, so you need to use max().eq(0) 2 days ago

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