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ArcGIS Pro Analysis tool that can select highest value intersecting

CMcDonald

Hello,

I have been asked to overlay our Property Polygons data shown in grey in the attached image and then attach the value contained with the overlaid coloured polygons of Gas. In the example you can see the polygon highlighted in cyan has 3 possible values but I want to take the worst case scenario and select the value contained from the darkest coloured polygon intersecting. The gas polygon layer contains a Class attribute which ranges from 1-6.

Is there a way to do this and what tool would i use please?

I have a Standard licence.

Thankyou.

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Analysis

Accepted answers

CMcDonald

ESRI UK Support were able to resolve this for me. Thank you!

Use Add Spatial Join

All comments

DanPatterson

if both inputs are polygons, then a summarize within using the maximum might work

Summarize Within (Analysis)—ArcGIS Pro | Documentation

AustinAverill

The link below is a post that describes how to do exactly what you're looking for using arcade to calculate a new field!

https://community.esri.com/t5/attribute-rules-questions/how-to-generate-largest-overlap-from-polygon-in/td-p/1283562

CMcDonald

Thankyou @DanPatterson
I had a go with Summarize Within Tool but the output generated some odd results.

As the coloured Polygons only contain values in a field named CLASS of either 1,2,3,4,5 or 6 I would expect the Maximum statistic to return a whole value.

In quite a few cases I am getting decimal points.

and in the highlighted record above the value should actually be 4.

Unsure if I am missing something?

Thank you

DanPatterson

From the help topic

Polygon summary features are summarized using the areal proportions of the input features.

So it has portioned the max based on the areal overlap.

If the inputs were rasters, then a "zonal maximum" would be what you are after.

CMcDonald

ESRI UK Support were able to resolve this for me. Thank you!

Use Add Spatial Join

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