70002476 Convert GPS Survey data in Latitude format to XY format

Article 70002476
Type HowTo
Product Engine
Version 10
Date Added 2/5/2024 12:00:00 AM
Fixed (2/5/2024 12:00:00 AM)
Submitted by chandrashekhar chougule


Convert GPS Survey data in Latitude / Longitude (Northing / Easting) format to X-Y format


Try a code like:

                // using VectorDraw.Geometry.GPS
                //tranform GPS Latitude and Longitude to VDF x,y coordinates
                //First we need to create a GPS_MAP object
                //Create a  GPS_MAP object passing the desired ellipsoid of our area from the redifined at the follow link:https://developers.arcgis.com/javascript/3/jshelp/pcs.html
                GPS.GPS_MAP gmap =  new GPS.GPS_MAP("PROJCS[\"Greek_Grid\",GEOGCS[\"GCS_GGRS_1987\",DATUM[\"D_GGRS_1987\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",24],PARAMETER[\"Scale_Factor\",0.9996],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]");

                //Now we add some GPS positions to our VDF drawing as vdPoint objects, using the PointAt_GPS method
                //NOTE: you can also use the VectorDraw.Geomentry.GPS.Receiver to get real time GPS positions from your system
                GPS.GPS_POSITION gp1 = new GPS.GPS_POSITION("37.88794838876842, 23.777916121699967");
                GPS.GPS_POSITION gp2 = new GPS.GPS_POSITION("37.887745754239305, 23.77716794388667");
                GPS.GPS_POSITION gpmid = new GPS.GPS_POSITION("37.88785687646948, 23.777565499625105");
                gPoint pp1 = gmap.PointAt_GPS(gp1);
                gPoint pp2 = gmap.PointAt_GPS(gp2);
                gPoint ppm = gmap.PointAt_GPS(gpmid);

                doc.Model.Entities.AddItem(new vdPoint(doc, pp1));
                doc.Model.Entities.AddItem(new vdPoint(doc, pp2));
                doc.Model.Entities.AddItem(new vdPoint(doc, ppm));


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