topic Unexpected Result With esriSpatialRelEnvelopeIntersects and Shapefiles in ArcObjects SDK Questions https://community.esri.com/t5/arcobjects-sdk-questions/unexpected-result-with/m-p/590267#M15933 <HTML><HEAD></HEAD><BODY><SPAN>Original User: jflorey</SPAN><BR /><BR /><SPAN>Hi All,</SPAN><BR /><BR /><SPAN>I am getting an unexpected result when I query a shapefile source feature class with a Spatial Filter using the esriSpatialRelEnum.esriSpatialRelEnvelopeIntersects for my spatial filter SpatialRel property.&nbsp; The shapefiles are projected into NAD_1983_UTM_Zone_17N.&nbsp; I will post the C# code I wrote to be used with an Add-In as EndpointSpatialSelection.txt (I can't upload a file with a .cs extension).&nbsp; Essentially the code grabs a user selected polyline feature, gets the from point of the feature and performs a spatial search on a point feature class around the from point of the polyline.&nbsp; When I set the spatial filter's SpatialRel property to esriSpatialRelEnvelopeIntersects, the search is returning point features that are as far as 71 meters away from the line's from point.&nbsp; If I change the SpatialRel property to esriSpatialRelIntersects, the search returns just a single point that is directly above the from point of the line.&nbsp; I tested similar code with a VBA macro in Arc 9.3.1 and got the same result.&nbsp; If I change the datasource to a file geodatabase projected into the same coordinate space, both searches return just the expected result, a single point that lies directly on top of the linear feature endpoint.&nbsp; When I wrote out the bounding coordinates of the envelopes of the search point and all of the points returned by the spatial search, only one returned feature had a bounding box that overlay the bounding box of the search point.&nbsp; The attached C# code will select all of the point features returned by the search, and will write out the envelope X and Y Min and Max for every found point.&nbsp; I will also attach the bounding box values (NorthBayResults.txt).</SPAN><BR /><BR /><SPAN>Any assistance would be greatly appreciated.</SPAN><BR /><BR /><SPAN>Cheers,</SPAN><BR /><SPAN>Jay</SPAN></BODY></HTML> Wed, 20 Mar 2013 23:21:59 GMT Anonymous User 2013-03-20T23:21:59Z Unexpected Result With esriSpatialRelEnvelopeIntersects and Shapefiles https://community.esri.com/t5/arcobjects-sdk-questions/unexpected-result-with/m-p/590267#M15933 <HTML><HEAD></HEAD><BODY><SPAN>Original User: jflorey</SPAN><BR /><BR /><SPAN>Hi All,</SPAN><BR /><BR /><SPAN>I am getting an unexpected result when I query a shapefile source feature class with a Spatial Filter using the esriSpatialRelEnum.esriSpatialRelEnvelopeIntersects for my spatial filter SpatialRel property.&nbsp; The shapefiles are projected into NAD_1983_UTM_Zone_17N.&nbsp; I will post the C# code I wrote to be used with an Add-In as EndpointSpatialSelection.txt (I can't upload a file with a .cs extension).&nbsp; Essentially the code grabs a user selected polyline feature, gets the from point of the feature and performs a spatial search on a point feature class around the from point of the polyline.&nbsp; When I set the spatial filter's SpatialRel property to esriSpatialRelEnvelopeIntersects, the search is returning point features that are as far as 71 meters away from the line's from point.&nbsp; If I change the SpatialRel property to esriSpatialRelIntersects, the search returns just a single point that is directly above the from point of the line.&nbsp; I tested similar code with a VBA macro in Arc 9.3.1 and got the same result.&nbsp; If I change the datasource to a file geodatabase projected into the same coordinate space, both searches return just the expected result, a single point that lies directly on top of the linear feature endpoint.&nbsp; When I wrote out the bounding coordinates of the envelopes of the search point and all of the points returned by the spatial search, only one returned feature had a bounding box that overlay the bounding box of the search point.&nbsp; The attached C# code will select all of the point features returned by the search, and will write out the envelope X and Y Min and Max for every found point.&nbsp; I will also attach the bounding box values (NorthBayResults.txt).</SPAN><BR /><BR /><SPAN>Any assistance would be greatly appreciated.</SPAN><BR /><BR /><SPAN>Cheers,</SPAN><BR /><SPAN>Jay</SPAN></BODY></HTML> Wed, 20 Mar 2013 23:21:59 GMT https://community.esri.com/t5/arcobjects-sdk-questions/unexpected-result-with/m-p/590267#M15933 Anonymous User 2013-03-20T23:21:59Z