https://community.esri.com/t5/arcgis-pro-questions/spatial-analysis-question-calculating-overlap-area/m-p/1128809#M49346 <P>Hello,</P><P>I have a large data layer, let's call it patch A. It is very large in size. I also have 100+ smaller patch data layers, which just for this example I am going to call layers 1-100. These layers are both polygons and lines. I am trying to calculate the area overlap between patch A and the smaller 1-100 layers.&nbsp;</P><P>Ultimately, I am trying to spit out a table that includes this information:</P><P>Patch A and Layer 1 overlap: 200 acres</P><P>Patch A and Layer 2 overlap: .2 acres</P><P>Patch A and Layer 3 overlap: 12 acres</P><P>Etc...(I made up those numbers).</P><P>&nbsp;</P><P>Because there is so much data I think I have to run this in python or R. I have experience with R, but not together with ArcGIS Pro. I think I can figure it out, though. Is there a function I can use to run through and calculate this for all of these data?</P><P>Also, some of the smaller patch layers have different spatial references. Is there a quick way to reconfigure the spatial reference for all 1-100 data layers at once so they all use the same reference (e.g. WSG84)?&nbsp;</P><P><BR />Many thanks in advance.&nbsp;</P> Fri, 24 Dec 2021 17:08:51 GMT AnaPowell 2021-12-24T17:08:51Z https://community.esri.com/t5/arcgis-pro-questions/spatial-analysis-question-calculating-overlap-area/m-p/1128809#M49346 <P>Hello,</P><P>I have a large data layer, let's call it patch A. It is very large in size. I also have 100+ smaller patch data layers, which just for this example I am going to call layers 1-100. These layers are both polygons and lines. I am trying to calculate the area overlap between patch A and the smaller 1-100 layers.&nbsp;</P><P>Ultimately, I am trying to spit out a table that includes this information:</P><P>Patch A and Layer 1 overlap: 200 acres</P><P>Patch A and Layer 2 overlap: .2 acres</P><P>Patch A and Layer 3 overlap: 12 acres</P><P>Etc...(I made up those numbers).</P><P>&nbsp;</P><P>Because there is so much data I think I have to run this in python or R. I have experience with R, but not together with ArcGIS Pro. I think I can figure it out, though. Is there a function I can use to run through and calculate this for all of these data?</P><P>Also, some of the smaller patch layers have different spatial references. Is there a quick way to reconfigure the spatial reference for all 1-100 data layers at once so they all use the same reference (e.g. WSG84)?&nbsp;</P><P><BR />Many thanks in advance.&nbsp;</P> Fri, 24 Dec 2021 17:08:51 GMT https://community.esri.com/t5/arcgis-pro-questions/spatial-analysis-question-calculating-overlap-area/m-p/1128809#M49346 AnaPowell 2021-12-24T17:08:51Z https://community.esri.com/t5/arcgis-pro-questions/spatial-analysis-question-calculating-overlap-area/m-p/1129072#M49380 <P>Since this question has languished over the holidays with 770 reads and no suggestions, I will address your last request</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/batch-project.htm" target="_blank">Batch Project (Data Management)—ArcGIS Pro | Documentation</A></P><P>As for the rest of your situation, if you are working with raster data, then you will probably need to "batch"</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/tabulate-area.htm" target="_blank">Tabulate Area (Spatial Analyst)—ArcGIS Pro | Documentation</A></P><P>however, getting all the results into a standard output table may be another issue.</P><P>If you can work with R, or NumPy then you may be better off creating a multidimensional array and doing the summaries in the 3rd dimension either by layer or as an aggregation</P> Mon, 27 Dec 2021 21:49:24 GMT https://community.esri.com/t5/arcgis-pro-questions/spatial-analysis-question-calculating-overlap-area/m-p/1129072#M49380 DanPatterson 2021-12-27T21:49:24Z