topic Re: How to separate or extract polygon that overlapping a base map? in Data Management Questions

How to separate or extract polygon that overlapping a base map?

marcie_elenemarcus — Mon, 16 Jan 2012 04:05:04 GMT

Hi,

I have a basemap and a polygon that overlapping this base map. I just need the polygon that DO NOT overlap with the base map. How could i do this? I have about 100 polygons and i need to remove all the overlapping polygons and just keep the polygon area that do not overlap with the base map.. I had tried erase tools but it do not work. i'm currently using Arcmap 9.3 version.Later on, after I do all the erase i need to the the all the intensity for the polygons that overlapping each other. BUT not the area that overlap with the base map. Can you help me?
Thank you :confused:

Re: How to separate or extract polygon that overlapping a base map?

DanLee — Tue, 17 Jan 2012 16:15:22 GMT

I am not sure what you meant by base map, but perhaps you can try this:

1. Use the Create Fishnet tool (Data Management toolbox - Feature Class toolset) to create a 1 by 1 "cell" using your base map layer as the Template Extent; you should get a rectangle polygon covering your base map area.
2. Use the Erase tool to erase your polygons by the rectangle polygon.

Does that work for you?

Re: How to separate or extract polygon that overlapping a base map?

marcie_elenemarcus — Fri, 10 Feb 2012 04:16:12 GMT

Hi,

Thanks a lot Dan. I figure it out.. I just have to use the Erase tools.

Thank you. 🙂 🙂

Re: How to separate or extract polygon that overlapping a base map?

DanLee — Fri, 10 Feb 2012 14:52:07 GMT

You are welcome! I am glad it worked for you. 🙂