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José Guillermo
265
Loading shape
posted

First excuse my bad English.
I just purchased the Ultimate Suite 2010 vol3, but I have problems loading a shape in xammap. From what I read in forums is a matter of projection coordinates, but can not find how to solve it. I hope you can help me with the code in both VB and in xaml.
I am attaching the files shp, shx, dbf and prj generated by ArcView

Tamasopo.zip
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  • 3255
    Verified Answer
    posted

    Hi guillermodelatorre,

    Your shapefiles use the Transverse Mercator projection and WGS 1984 datum. Try the following XAML code:

     <Maps:XamMap x:Name="xamMap">           
     <Maps:MapNavigationPane igControls:XamDock.Edge="InsideRight" />
     <Maps:XamMap.Layers>
      <Maps:MapLayer>
       <Maps:MapLayer.Reader>
        <Maps:ShapeFileReader Uri="ShapeFiles/Tamasopo/TAMASOPO">
         <Maps:ShapeFileReader.CoordinateSystem>                                                               
          
          <Maps:CoordinateSystem UnitType="M" FalseEasting="500000.0" FalseNorthing="0.0" >
           <Maps:CoordinateSystem.Projection>                                       
            <Maps:TransverseMercator EllipsoidType="WGS84"
             ScaleFactor="0.9996" CentralMeridian="-99.0" LatitudeOrigin="0.0"     />
           </Maps:CoordinateSystem.Projection>
          </Maps:CoordinateSystem>

         </Maps:ShapeFileReader.CoordinateSystem>                                                        
        </Maps:ShapeFileReader>
       </Maps:MapLayer.Reader>
      </Maps:MapLayer>
     </Maps:XamMap.Layers>
    </Maps:XamMap>

    The result:

    Information about coordinate system and map projection is stored in the *.prj file. You can read more about the different files that make the shapefile here: http://en.wikipedia.org/wiki/Shapefile. You can even open *.prj file with notepad. Here is the output of TAMASOPO:

    PROJCS["WGS_1984_UTM_Zone_14N",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-99.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

    You can read more about coordinate system and projection from this articles:http://help.infragistics.com/NetAdvantage/WPFDV/2010.3/CLR4.0/?page=xamWebMap_Change_Map_Coordinate_System.html, http://help.infragistics.com/Help/NetAdvantage/WPFDV/2010.3/CLR4.0/html/xamWebMap_About_Map_Projections.html

    Regards,

    Ivan Kotev

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