https://community.esri.com/t5/arcgis-pro-questions/attribute-rule-summarization-based-on-intersection/m-p/1143248#M51347 <P>Hello,</P><P>I have been working on a few projects where we have a polygon feature class [Plow_Zones] and line feature class [Road_Centerlines], and I want to know the length of roads within each Plow District. I know I can summarize within to calculate the length of road within each poly, but is there a way to integrate this as an attribute rule to update the length of roads within each plow zones as they change? I've seen some similar questions and it appears a common solution is to create a model and run a task scheduler, but I'm sure there is an expression to get this to work within the attribute table itself as a "calculation rule." Any help would be appreciated.&nbsp;</P> Fri, 11 Feb 2022 19:16:54 GMT GarrettByrd 2022-02-11T19:16:54Z https://community.esri.com/t5/arcgis-pro-questions/attribute-rule-summarization-based-on-intersection/m-p/1143248#M51347 <P>Hello,</P><P>I have been working on a few projects where we have a polygon feature class [Plow_Zones] and line feature class [Road_Centerlines], and I want to know the length of roads within each Plow District. I know I can summarize within to calculate the length of road within each poly, but is there a way to integrate this as an attribute rule to update the length of roads within each plow zones as they change? I've seen some similar questions and it appears a common solution is to create a model and run a task scheduler, but I'm sure there is an expression to get this to work within the attribute table itself as a "calculation rule." Any help would be appreciated.&nbsp;</P> Fri, 11 Feb 2022 19:16:54 GMT https://community.esri.com/t5/arcgis-pro-questions/attribute-rule-summarization-based-on-intersection/m-p/1143248#M51347 GarrettByrd 2022-02-11T19:16:54Z