topic Select Points Outside of a Polygon in .NET Maps SDK Questions https://community.esri.com/t5/net-maps-sdk-questions/select-points-outside-of-a-polygon/m-p/516673#M6348 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I have a PointCollection and a Polygon. I want to select all of the points from the PointCollection that are not inside the Polygon. I thought that I could use&nbsp;GeometryEngine.Difference but it seems that a PointCollection is not valid for a parameter.</P><P></P><P>Does anyone have an idea on how best to do this?</P><P></P><P>Thanks</P></BODY></HTML> Wed, 06 May 2020 19:17:36 GMT GreggCountryman1 2020-05-06T19:17:36Z Select Points Outside of a Polygon https://community.esri.com/t5/net-maps-sdk-questions/select-points-outside-of-a-polygon/m-p/516673#M6348 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I have a PointCollection and a Polygon. I want to select all of the points from the PointCollection that are not inside the Polygon. I thought that I could use&nbsp;GeometryEngine.Difference but it seems that a PointCollection is not valid for a parameter.</P><P></P><P>Does anyone have an idea on how best to do this?</P><P></P><P>Thanks</P></BODY></HTML> Wed, 06 May 2020 19:17:36 GMT https://community.esri.com/t5/net-maps-sdk-questions/select-points-outside-of-a-polygon/m-p/516673#M6348 GreggCountryman1 2020-05-06T19:17:36Z Re: Select Points Outside of a Polygon https://community.esri.com/t5/net-maps-sdk-questions/select-points-outside-of-a-polygon/m-p/516674#M6349 <HTML><HEAD></HEAD><BODY><P>I'm not hugely familiar with .NET any more, but could you not create a <A href="https://developers.arcgis.com/net/latest/wpf/api-reference/html/T_Esri_ArcGISRuntime_Geometry_Multipoint.htm"><STRONG>MultiPoint</STRONG></A> from the PointCollection (looks like PointCollection&nbsp;implements the right interface&nbsp;to fit the MultiPoint constructor) and then pass that multipoint into GeometryEngine.Difference() along with the polygon?</P></BODY></HTML> Wed, 06 May 2020 22:12:39 GMT https://community.esri.com/t5/net-maps-sdk-questions/select-points-outside-of-a-polygon/m-p/516674#M6349 Nicholas-Furness 2020-05-06T22:12:39Z