wanted to overlay two featureclasses where one has a smaller extent than the other, but preserve all input features in the output. I used arcpy.Union_analysis
. In order to maintain feature geometry present in even only one of the two input FCs, I use the "NO_GAPS" option. The documentation seems (to me) to state that such features will have the full/combined attributes of both feature classes, but that values will be "blank" (actually says: This feature will have blank attributes.
)
Problem is that the values for numerical attributes of these features are not actually "NULL" in the output. They are zero. Is this correct or is there any way to ensure that "NULL" values are produced? Zero is a legitimate value, so having that in the output is a failure for my use case.
Thanks for any info!
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