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NoData values vs Zero (or Null values)

is there an easy way for a non-developer user when uploading data to set a ‘nodata’ value?
i.e. so that zero and no data aren’t represented in the same way?
in my data uses -1 as nodata and when I make a stacked histogram, some of that text pops up as -1 instead of the actual value.

Thanks!

Dave

You can use a nan (not a number):