I am using ArcGIS Pro 2.8.3.
I have a shapefile of census blocks of LA county. I also have a layer of buffers. I want to find buffers that lay completely within the boundary of LA county. So I use select by location--> completely within. However, this command gives me only the buffers that lie completely within any individual census block, instead of within the entire LA county.
I try to go to edit-->merge to merge all the census blocks into one, so that I have one polygon of LA county. No matter whether I use "Existing Feature" or "New feature", I always receive the error message: merge features failure. the spatial index grid size is invalid.
I was wondering whether anyone could help me with this. Thank you.
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