topic Re: About create random point in a region in ArcGIS Pro Questions

About create random point in a region

bangminli — Tue, 05 Jul 2022 09:29:17 GMT

I have a question, I want to randomly sample within a polygon, the polygon contains some known points, and I want to randomly sample outside a certain range of these points, so how do I do it on arcgis pro?

Re: About create random point in a region

FrédéricPRALLY — Tue, 05 Jul 2022 09:50:43 GMT

Hi bangminli,

To create random points you should use Create Random Points (Data Management)

Hope this help you,

Best regards,

Fred

Re: About create random point in a region

bangminli — Tue, 05 Jul 2022 10:25:54 GMT

Hi Fred

Many thanks for your help, but there is only one constraining factor in the panel. I already put in my point features in it and set the minimum distance and the extent of the polygon features in the environment settings, the number of points randomly sampled is not enough.

Best wishes

bangmin li

Re: About create random point in a region

DanLee — Tue, 05 Jul 2022 14:47:52 GMT

You can try the following:

1. Select the known points.

2. Run Buffer tool with the distance (range) you need to create buffer polygons.

3. Use Erase tool to erase the original polygon by the buffer polygons.

https://pro.arcgis.com/en/pro-app/2.8/tool-reference/analysis/erase.htm

4. Run Create Random Points in the remaining polygon.

Does that work for you?

Re: About create random point in a region

bangminli — Tue, 05 Jul 2022 17:48:18 GMT

It is work. Thanks a lot.

Re: About create random point in a region

DanLee — Tue, 05 Jul 2022 18:20:22 GMT

Glad to hear. You are welcome!