Polygon to raster conversion - how to sum values of overlapping polygons

LizanneRoxburgh

I have a shapefile with a few hundred overlapping polygons (these are minimum bounding polygons that were fitted around species distribution points). Each polygon has a value. I need to end up with a raster in which each raster cell has a value that is the summed value of the polygons that overlap with that cell. Can anyone advise on the workflow I could use in ArcGIS pro to achieve this?  Polygon to Raster does not seem to allow summing the values of the overlapping polygons. 

Remi_Foicik

Hello Lizianne,

I don't know if I understood correctly but you can try the following workflow.

Create a Polygon Feature class like a Grid (each polygon would be a cell in your raster).

Use "the summarize within" tool where you can apply  SUM on the fields in you shapefile.
https://pro.arcgis.com/en/pro-app/latest/tool-reference/analysis/summarize-within.htm

Then you can translate you feature class "grid" to a raster with "the  feature to raster" tool.

It may not be the most beautiful solution, but it can work 🙂

Another solution :  you can transform each polygon into a raster and then apply a raster calculation with all your raster.

Rémi