how do you group polygons

02-17-2017 05:13 AM
New Contributor II

I'm back still trying to learn, I have a shape file with polygons with labels like  A3, B3, A2, D4 

what I want to do is join all that has an A into a polygon, ones that has B into a polygon, ones that has

3 into a polygon ,,, you get the idea...  any help would be greatful

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2 Replies
MVP Esteemed Contributor

you had a pattern until you said '3' so which group does 'A3' go into? and do you want them to become multipart shapes? or just symbolize them? just a new classification in the attributes table.

The game plan clarification might help to provide useful suggestions

Regular Contributor II

We don't know what you want to do, but I think that you want this tools

Dissolve tool .  Dissolve—Help | ArcGIS Desktop 

But before use this tool, Add a new field and field calculator with Left ([field name],1 ), to get the first letter of the Field A, B , C ,, etc.

or calculate with Right ([field name],1) , to get the number in the last of field.

that is according to the group that you want ( 1 , 2 , 3 ) or ( A , B , C)