topic Re: Breaking points based on spatial distance in Geoprocessing Questions

Breaking points based on spatial distance

TKM_ — Tue, 24 Sep 2019 23:53:32 GMT

Hi ArcPythoneers,

I would like to split points (they are uniquely grouped with diff points belonging to different family of points) based on their spatial distance. One thing I don't know to get it is the distance from one point to the other and keep track of that so that when it is beyond a specified threshold, then I should break the group point and assign it to a different family of points. Kindly, if anyone could be having insights about an ideal approach, I will be more than glad. Thanks..ArcGIS Pro Python ArcGIS API for Python Calculating distance between points in a Feature layer

Re: Breaking points based on spatial distance

DanPatterson_Retired — Wed, 25 Sep 2019 03:40:52 GMT

I would start by looking at existing tools

How Density-based Clustering works—ArcGIS Pro | ArcGIS Desktop

If your points are sequential in their ordering, then the sequential point distances aren't hard to derive. From a histogram or inspection of that data, you could decide on the spacing threshold to identify cluster breaks in the table.

This could be accomplished with cursors and arcpy, or more simply using numpy for the distance and statistical calculations.

Re: Breaking points based on spatial distance

TKM_ — Wed, 25 Sep 2019 15:41:27 GMT

Hi Dan, would you kindly let me know the 'how about' of the cursor or numpy approach? I really appreciate, thanks.