https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/intersect-polylines-with-tolerance/m-p/1111585#M75086 <P>I am working with two polyline layers of which the geometry will be similar, but not exact.&nbsp; I need to be able to take one polyline in one layer and find out if another polyline in the other layer has any sections that overlap.&nbsp;</P><P>Since the vertices are nearly all different between the layers, I was hoping I could use something like the GeometryEngine <A href="https://developers.arcgis.com/javascript/3/jsapi/esri.geometry.geometryengine-amd.html#intersect" target="_blank" rel="noopener">intersect</A> function with a tolerance.&nbsp; However, it seems like the tolerance is immutable and is based on the spatial reference (see <A href="https://community.esri.com/t5/arcgis-api-for-javascript-questions/geometryengine-tolerance-intersect-in-this-case/m-p/1075062#M73721" target="_blank" rel="noopener">this post</A>).&nbsp; For the layers I'm working with, the tolerance appears to be 0.001 meters, which isn't enough.&nbsp; I am probably looking for 10 feet.</P><P>I had considered doing a geodesic buffer around one polyline before doing the intersect, but that will end up being an expensive operation since the buffered polyline could be several hundred miles long.</P><P>Any suggestions or alternate approaches would be appreciated.&nbsp; Thanks!</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 27 Oct 2021 12:16:04 GMT AndyWhitaker1 2021-10-27T12:16:04Z https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/intersect-polylines-with-tolerance/m-p/1111585#M75086 <P>I am working with two polyline layers of which the geometry will be similar, but not exact.&nbsp; I need to be able to take one polyline in one layer and find out if another polyline in the other layer has any sections that overlap.&nbsp;</P><P>Since the vertices are nearly all different between the layers, I was hoping I could use something like the GeometryEngine <A href="https://developers.arcgis.com/javascript/3/jsapi/esri.geometry.geometryengine-amd.html#intersect" target="_blank" rel="noopener">intersect</A> function with a tolerance.&nbsp; However, it seems like the tolerance is immutable and is based on the spatial reference (see <A href="https://community.esri.com/t5/arcgis-api-for-javascript-questions/geometryengine-tolerance-intersect-in-this-case/m-p/1075062#M73721" target="_blank" rel="noopener">this post</A>).&nbsp; For the layers I'm working with, the tolerance appears to be 0.001 meters, which isn't enough.&nbsp; I am probably looking for 10 feet.</P><P>I had considered doing a geodesic buffer around one polyline before doing the intersect, but that will end up being an expensive operation since the buffered polyline could be several hundred miles long.</P><P>Any suggestions or alternate approaches would be appreciated.&nbsp; Thanks!</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 27 Oct 2021 12:16:04 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/intersect-polylines-with-tolerance/m-p/1111585#M75086 AndyWhitaker1 2021-10-27T12:16:04Z