MGMap.mcsToLonLat

Syntax

MGPoint mcsToLonLat(double x, double y)

Description

Converts the specified Mapping Coordinate System (MCS) coordinate pair to lat/lon coordinates.

The MCS for the map file is set by the map author. For more information on Mapping Coordinate Systems, refer to the Autodesk MapGuide User's Guide.

Parameters

x - MCS X coordinate to convert. y - MCS Y coordinate to convert.

Returns

MGPoint - Coordinate in longitude/latitude units.

Error Codes

none

Example

This example is designed to work with the Tutorial.mwf file that is included with Autodesk MapGuide Author. It converts a set of lat/lon points to MCS, and then uses mcsToLonLat() to convert them back again:

{    
    var map = getMap();

    // Get lat/lon and convert to MCS
    var xyPt = map.lonLatToMcs(map.getLon(), map.getLat());

    // pull out X and Y values and display in dialog
    x = xyPt.getX();
    y = xyPt.getY();
    alert( "MCS X: " + x + "\nMCS Y:" + y );

    // Convert MCS to lat/lon
    var latLonPt = map.mcsToLonLat(x, y);

    // pull out lat/lon vals and display in dialog
    lon = latLonPt.getX();
    lat = latLonPt.getY();
    alert( "Lat: " + lat + "\nLon: " + lon );
}

See Also

lonLatToMcs