topic Re: Combining multiple grids in the same layer using python in ArcGIS Pro Questions

Combining multiple grids in the same layer using python

neomapper — Wed, 22 Feb 2023 21:11:12 GMT

How do I combine multiple grids using python without having to create a new layer ?

Re: Combining multiple grids in the same layer using python

Kepa — Thu, 23 Feb 2023 15:26:24 GMT

Do you mean having all different grids in one feature class? If that's the case you can create them (Grid Index Features -Cartography) and merge them with python into a singel FC. Or just merge them if you already have them.

If not try to clarify what's your goal here. Regards,

Re: Combining multiple grids in the same layer using python

neomapper — Fri, 24 Feb 2023 13:46:16 GMT

Hi Kepa,

The grid index creates an entirely new layer which is something that I can't utilize because we have over +200 systems and approx. +3000 grids. There is the edit merge tool but I would have to manually select each and every system and grids to merge which is difficult doing this by hand each week. Is there a way or tool to select features in the same feature class and merge grids without having to create an entire new feature class?

Re: Combining multiple grids in the same layer using python

Kepa — Fri, 24 Feb 2023 13:56:20 GMT

Ok, I was misunderstanding your goal here. You are talking about merging grid features of the same feature class and not grid feature classes, is that right?

Re: Combining multiple grids in the same layer using python

neomapper — Fri, 24 Feb 2023 14:11:50 GMT

Yep, grid features of the same feature class!

Re: Combining multiple grids in the same layer using python

Kepa — Fri, 24 Feb 2023 14:54:05 GMT

So looking at your table I assume you want to merge them by system number field. The "easy" way would be (you'll have to deal with python logic a bit):

Dissolve by system number field, this will create a temporary feature class with the features merged by its value.
Create a SearchCursor for dissolved feature class storing system number value and SHAPE@ object in differente variables
Create an InsertCursor for your existing grid feature class
For every system number value from SearchCursor apply a Selection by attribute on your grid feature class and execute DeleteFeatures.
Finally add/insert the shape and system number value into your existing grid feature class with the InsertCursor (the rest of the fields would be Null of course, although I see only Name field has values)
Delete temporary feature class

Hope that helps!