[mapguide-users] converting projection on fly

[shreepad]

nevermind i sloved it. 
my code was missing somethign 


here is the correced code 


 string ss = map.GetMapSRS();
    MgCoordinateSystemFactory coordinateSystemFactory = new
MgCoordinateSystemFactory();
    MgCoordinateSystem srs = coordinateSystemFactory.Create(ss);
    MgCoordinateSystemMeasure srsMeasure = new
MgCoordinateSystemMeasure(srs);

 
     double X = 6144744.38401563; (just sample x ,y point but you can add
dynamic point from map)
     double Y = 2100980.15175119; 

     MgGeometryFactory gFactory = new MgGeometryFactory();

     MgCoordinate coord = gFactory.CreateCoordinateXY(X, Y);

     MgCoordinate newCoord = srs.ConvertToLonLat(coord);

     double xConv = newCoord.GetX();
     double yConv = newCoord.GetY();
     
     Response.Write(xConv);
     Response.Write(yConv);
     

h

shreepad wrote:
> 
> Hi 
> i have the data in state plane coordinate and i want to convert them to
> lat lon on fly i have wrote the code but it is giving me error. here is my
> code. please let me know what i am doing wrong . 
> 
> projection is NAD_1983_StatePlane_California_III_FIPS_0403_Feet 
> and i want to conver it to LAT LON
> 
> here is my code 
> 
> 
> MgSelection mapSelection = null;
> MgResourceService resService =
> (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
> MgFeatureService featService =
> (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
> MgMap map = new MgMap();
> map.Open(resService, "General Public Map");
> mapSelection = new MgSelection(map);
> mapSelection.Open(resService, "General Public Map");
> MgReadOnlyLayerCollection layers = mapSelection.GetLayers();
> 
> 
> MgCoordinateSystemFactory l_oMGCoordinateSystemFactory = new
> MgCoordinateSystemFactory();
> MgGeometryFactory l_oMGGeometryFactory = new MgGeometryFactory();
> String l_sWKTproj = map.GetMapSRS();
> 
> Response.Write(l_sWKTproj);
> MgCoordinateSystem l_oMGCoordinateSystem =
> l_oMGCoordinateSystemFactory.Create(l_sWKTproj);
> 
> double l_dMinX = 6141861.7828919375;
> double l_dMinY = 2095968.7307088032;
> 
> MgCoordinate l_oMGCoordinateLatLonLL =
> l_oMGGeometryFactory.CreateCoordinateXY(l_dMinX, l_dMinY);
> MgCoordinate l_oMGCoordinateXYLL =
> l_oMGCoordinateSystem.ConvertToLonLat(l_oMGCoordinateLatLonLL);
> 
> double xConv = l_oMGCoordinateXYLL.GetX();
> double yConv = l_oMGCoordinateXYLL.GetY();
> Response.Write(xConv);
> Response.Write(yConv);
> 
> "
> 
> 

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