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will Raster Calculator ingnore null values?

Question asked by dmede on Mar 27, 2013
Latest reply on Mar 29, 2013 by dmede
I have a stack of rasters (daily UV values for a year). I need a yearly average raster but my input daily rasters contain null values through out each raster at various locations.

If a cell stack has a null in it I still need the average of the remaining cells with real values, but not an average that counts the null cells for division. Will the Raster Calculator ignore the null value cells in the average or will it count that cell in the denominator value for the average function?

I see that Cell Statistics has an option to ignore null value cells, which reads like it would be what I want but their graphic example seems to suggest that what it does is ignore the entire cell stack if one cell is null.

http://resources.arcgis.com/en/help/main/10.1/index.html#/Cell_Statistics/009z0000007q000000/

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