topic Re: Adding Z values to an existing polygon in Cartography and Maps Questions

Adding Z values to an existing polygon

janehansen — Sat, 17 Mar 2018 05:11:33 GMT

Hi I have been asked to include a z value for polygons which have already been created. Is this possible, and is it possible to add z values when there are no elevation or vertical values in the attribute table?

Thank

Jane

Re: Adding Z values to an existing polygon

DanPatterson_Retired — Sat, 17 Mar 2018 09:34:41 GMT

You can't retro-fit an existing featureclass, but you probably could create a new one and copy the existing 2D geometry over and define how z is to be assigned

http://pro.arcgis.com/en/pro-app/help/editing/create-polygon-features.htm

http://pro.arcgis.com/en/pro-app/help/editing/specify-an-elevation-for-3d-features.htm

beyond this some operations that require a z value simply need a field in the attribute table. You would have to provide values for it but that field can be used for such things as extruding polygons.

Re: Adding Z values to an existing polygon

janehansen — Sat, 17 Mar 2018 18:03:00 GMT

Thanks once again for your help Dan. Very helpful!

Jane

Re: Adding Z values to an existing polygon

XanderBakker — Sun, 18 Mar 2018 02:58:40 GMT

In case you would be interested in doing some python coding, I have a blog post here that explains how to set Z values: https://community.esri.com/people/xander_bakker/blog/2016/07/08/working-with-3d-and-m-aware-geometries-in-arcpy