Convert Coordinates from any format to WGS84

AnkurWalia

Hi, How can we convert the coordinates from any format to WGS84. I am using C# with Arc objects.

SachinKanaujia

If your input is a Geometry (say points) then you can use the below sample

//Create Spatial Reference Factory

            ISpatialReferenceFactory srFactory = new SpatialReferenceEnvironmentClass();

            ISpatialReference sr1;

            //GCS to project from

            IGeographicCoordinateSystem gcs = srFactory.CreateGeographicCoordinateSystem(<SPAN class="pun">(</SPAN><SPAN class="typ">int</SPAN><SPAN class="pun">)</SPAN><SPAN class="pln">esriSRGeoCSType</SPAN><SPAN class="pun">.</SPAN><SPAN class="pln">esriSRGeoCS_WGS1984</SPAN>);

            sr1 = gcs;

            IProjectedCoordinateSystem pcs = srFactory.CreateProjectedCoordinateSystem((int)esriSRProjCSType.esriSRProjCS_NAD1983N_AmericaLambert);

            pcs.SetFalseOriginAndUnits(0, 0, 1000);

            ISpatialReference sr2;

            sr2 = pcs;

            //Point to project

            IPoint point = new PointClass() as IPoint;

            point.PutCoords(xCoord,yCoord);

            //Geometry Interface to do actual project

            IGeometry geometry;

            geometry = point;

            geometry.SpatialReference = sr2;

            geometry.Project(sr1);

You can use ProjectEx method if you also want to use specific Datum shift methods