topic Re: Create single features from Union output in ArcGIS Pro Questions

Create single features from Union output

DwightLanier — Mon, 25 Feb 2019 14:12:52 GMT

I have a single feature class containing numerous polygons that overlap in different ways. After running the union tool I now have multiple polygons where the input features overlapped, but there are multiple polygons for each input. What I would like is a single polygon at the intersected space, with attributes from all original input features appended, or some statistic from them (min, max, etc.). Ideas?

Re: Create single features from Union output

DanPatterson_Retired — Mon, 25 Feb 2019 15:26:28 GMT

https://pro.arcgis.com/en/pro-app/tool-reference/data-management/multipart-to-singlepart.htm

in both arcmap and ArcGIS pro will convert the multiparts to singleparts resulting in unique records for each geometry entity

Re: Create single features from Union output

GhislainPrince — Mon, 25 Feb 2019 19:43:55 GMT

hi Dwight,

first make a copy of your data.

What you'd want to do is identify all the features with identical geometry. This can be done with the `Find Identical` gp tool.

Then get your stats together: the output of previous step you could use as input to `Summary Statistics` gp tool with the FEAT_SEQ as the CASE_FIELD and choose whichever stats you want for each field.

Lastly you'll need to get the data back together into a single dataset... i think `Delete Identical` and `Join Fields` should do it ... there'll be a bit of trickiness to getting the JOIN , but pretty sure all the data is there.

Re: Create single features from Union output

DanPatterson_Retired — Mon, 25 Feb 2019 19:58:05 GMT

could be the gap/no-gap thing as well if the geometries aren't identical (ie polygons surrounded by other polygons)