topic Re: Calculate maximum radius of polygon in ArcGIS Pro Questions

Calculate maximum radius of polygon

AbbieP — Wed, 13 Mar 2024 19:25:28 GMT

Hi,

So currently doing a bit of work where I have multiple polygons (all different shapes and sizes) and am trying to work out the widest radius of each one.

So here for example I want to work out the widest point of the polygon, and what the radius is. I know I can use the measure tool (which tells me 5.1 miles) but I want to bulk do this for 500+ polygons.

Have tried Minimum Bounding Geometry but for half of the polygons it creates a circled much larger than needed, so unsure of the issue

Any ideas?

Re: Calculate maximum radius of polygon

DanPatterson — Wed, 13 Mar 2024 22:04:29 GMT

something is wrong with those minimum bounding geometries if that circle is what you are getting.

Ensure that you are working with single part shapes (run MultipartToSinglepart tool)

Run a Check Geometry first, then

Solved: Compute the longest radius in a polygon - Esri Community

will work for convex polygons and perhaps many concave if they aren't too concave

No "one" container will suit all shapes, for some it may be the minimum area bounding rectangle, for others, the circle may be appropriate. You will have to experiment