1

I'm making some maps in ArcGIS for some geochemical data. I have some null values in my attribute table but when I use the interpolation tools (kriging or inverse distance) the null values are automaticaly considered as zero.

Is there a way I could make the interpolation tool to ignore the points where there is a null value insted of considering it as zero?

3

I would put a definition query on your layer that is something like:

VALUE IS NOT NULL

Or something like that. That way the tool will ignore them.

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