topic Re: How to convert latitude and longitude (Spatial Reference wkid: 4326) to ArcGis Coordinates (Spatial Reference wkid: 23033)? in ArcGIS JavaScript Maps SDK Questions https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633157#M59117 <HTML><HEAD></HEAD><BODY><P>I was not using any transformation and there was the problem. For anyone that goes through this problem as well, make sure that you use a correct datum transformation for your area. Also there is a "transformForward" parameter in the ProjectParams object that indicates in which direction one should transform the coordinates.</P><P></P><P>Thanks for the help.</P></BODY></HTML> Tue, 27 Jan 2015 12:11:57 GMT BrianCachia 2015-01-27T12:11:57Z How to convert latitude and longitude (Spatial Reference wkid: 4326) to ArcGis Coordinates (Spatial Reference wkid: 23033)? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633155#M59115 <HTML><HEAD></HEAD><BODY><P>I have already tried with the GeometryService project method passing parameters like outSR as wkid : 23033 (the one we are using for our map) and geometries that contains geometris with spatialReference wkid : 4326.</P><P></P><P>The end result is that the points are being shown with quite an offset from the original position compared to Google Earth or Google Maps.</P></BODY></HTML> Tue, 27 Jan 2015 09:07:36 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633155#M59115 BrianCachia 2015-01-27T09:07:36Z Re: How to convert latitude and longitude (Spatial Reference wkid: 4326) to ArcGis Coordinates (Spatial Reference wkid: 23033)? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633156#M59116 <HTML><HEAD></HEAD><BODY><P>WKID 4326 is GCS_WGS84 - geographic cords based on the WGS84 datum.</P><P>WKID 23033 is ED_1950_UTM_33N. A projected UTM coordinate system based on the European datum.</P><P>You will need a transformation from one datum to the other to get them to match up.</P><P>There are a whole bunch of these available depending on your area of use.</P><P>See pages 12-13 of the pdf geographic_transformations in the documentation area of the install.</P></BODY></HTML> Tue, 27 Jan 2015 11:48:31 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633156#M59116 NeilAyres 2015-01-27T11:48:31Z Re: How to convert latitude and longitude (Spatial Reference wkid: 4326) to ArcGis Coordinates (Spatial Reference wkid: 23033)? https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633157#M59117 <HTML><HEAD></HEAD><BODY><P>I was not using any transformation and there was the problem. For anyone that goes through this problem as well, make sure that you use a correct datum transformation for your area. Also there is a "transformForward" parameter in the ProjectParams object that indicates in which direction one should transform the coordinates.</P><P></P><P>Thanks for the help.</P></BODY></HTML> Tue, 27 Jan 2015 12:11:57 GMT https://community.esri.com/t5/arcgis-javascript-maps-sdk-questions/how-to-convert-latitude-and-longitude-spatial/m-p/633157#M59117 BrianCachia 2015-01-27T12:11:57Z