How to get inner ring(hole) from shapefile in ASP.NET using dotspatial?












0















I'm searching a script to get inner ring from a polygon in the shapefile using dotspatial. Below is my script to get all coordinate(ignoring outer/inner ring) from a shapefile.



string shapeFilePath = @"example.shp";

shapeFilePath = location + shapeFilePath;

Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);

indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);



for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)

{



    IFeature feature = indexMapFile.Features.ElementAt(i);



    var arr = feature.Coordinates.ToArray();



    foreach (var det in arr)

    {

        DotSpatial.Topology.Coordinate det_cor = det;

        string X = det_cor.X.ToString();

        string Y = det_cor.Y.ToString();

    }

}





asp.net dotspatial







share|improve this question





























    0















    I'm searching a script to get inner ring from a polygon in the shapefile using dotspatial. Below is my script to get all coordinate(ignoring outer/inner ring) from a shapefile.



    string shapeFilePath = @"example.shp";
    
shapeFilePath = location + shapeFilePath;
    
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
    
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
    

    
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
    
{
    

    
    IFeature feature = indexMapFile.Features.ElementAt(i);
    

    
    var arr = feature.Coordinates.ToArray();
    

    
    foreach (var det in arr)
    
    {
    
        DotSpatial.Topology.Coordinate det_cor = det;
    
        string X = det_cor.X.ToString();
    
        string Y = det_cor.Y.ToString();
    
    }
    
}





    asp.net dotspatial







    share|improve this question



























      0












      0








      0








      I'm searching a script to get inner ring from a polygon in the shapefile using dotspatial. Below is my script to get all coordinate(ignoring outer/inner ring) from a shapefile.



      string shapeFilePath = @"example.shp";
      
shapeFilePath = location + shapeFilePath;
      
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
      
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
      

      
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
      
{
      

      
    IFeature feature = indexMapFile.Features.ElementAt(i);
      

      
    var arr = feature.Coordinates.ToArray();
      

      
    foreach (var det in arr)
      
    {
      
        DotSpatial.Topology.Coordinate det_cor = det;
      
        string X = det_cor.X.ToString();
      
        string Y = det_cor.Y.ToString();
      
    }
      
}





      asp.net dotspatial







      share|improve this question
















      I'm searching a script to get inner ring from a polygon in the shapefile using dotspatial. Below is my script to get all coordinate(ignoring outer/inner ring) from a shapefile.



      string shapeFilePath = @"example.shp";
      
shapeFilePath = location + shapeFilePath;
      
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
      
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
      

      
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
      
{
      

      
    IFeature feature = indexMapFile.Features.ElementAt(i);
      

      
    var arr = feature.Coordinates.ToArray();
      

      
    foreach (var det in arr)
      
    {
      
        DotSpatial.Topology.Coordinate det_cor = det;
      
        string X = det_cor.X.ToString();
      
        string Y = det_cor.Y.ToString();
      
    }
      
}





      asp.net dotspatial




      asp.net dotspatial






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 2 at 2:53







      Ahmad zainuri

















      asked Jan 2 at 2:16









      Ahmad zainuriAhmad zainuri

      12




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          i found the answer, this is my code, how to get inner ring from polygon



          string shapeFilePath = @"example.shp";
          
shapeFilePath = location + shapeFilePath;
          
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
          
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
          

          
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
          
{
          

          
    IFeature feature = indexMapFile.Features.ElementAt(i);
          
    IPolygon bp = feature.GetBasicGeometryN(0) as IPolygon;
          
    var all_polygon = bp.GetGeometryN(0);//include outer and inner ring, see this link -> https://stackoverflow.com/questions/8139739/wkt-how-do-you-define-polygons-with-3-rings-2-holes
          
    var outer_ring = bp.Shell.GetGeometryN(0);
          
    int idx_hole = 0;
          
    foreach (var hole in bp.Holes)
          
    {
          
        //get inner ring/hole from polygon
          
        Response.Write(bp.GetInteriorRingN(idx_hole));
          
        idx_hole++;
          
    }
          
}





          share|improve this answer























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            1 Answer
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            1 Answer
            1






            active

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            active

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            0














            i found the answer, this is my code, how to get inner ring from polygon



            string shapeFilePath = @"example.shp";
            
shapeFilePath = location + shapeFilePath;
            
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
            
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
            

            
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
            
{
            

            
    IFeature feature = indexMapFile.Features.ElementAt(i);
            
    IPolygon bp = feature.GetBasicGeometryN(0) as IPolygon;
            
    var all_polygon = bp.GetGeometryN(0);//include outer and inner ring, see this link -> https://stackoverflow.com/questions/8139739/wkt-how-do-you-define-polygons-with-3-rings-2-holes
            
    var outer_ring = bp.Shell.GetGeometryN(0);
            
    int idx_hole = 0;
            
    foreach (var hole in bp.Holes)
            
    {
            
        //get inner ring/hole from polygon
            
        Response.Write(bp.GetInteriorRingN(idx_hole));
            
        idx_hole++;
            
    }
            
}





            share|improve this answer




























              0














              i found the answer, this is my code, how to get inner ring from polygon



              string shapeFilePath = @"example.shp";
              
shapeFilePath = location + shapeFilePath;
              
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
              
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
              

              
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
              
{
              

              
    IFeature feature = indexMapFile.Features.ElementAt(i);
              
    IPolygon bp = feature.GetBasicGeometryN(0) as IPolygon;
              
    var all_polygon = bp.GetGeometryN(0);//include outer and inner ring, see this link -> https://stackoverflow.com/questions/8139739/wkt-how-do-you-define-polygons-with-3-rings-2-holes
              
    var outer_ring = bp.Shell.GetGeometryN(0);
              
    int idx_hole = 0;
              
    foreach (var hole in bp.Holes)
              
    {
              
        //get inner ring/hole from polygon
              
        Response.Write(bp.GetInteriorRingN(idx_hole));
              
        idx_hole++;
              
    }
              
}





              share|improve this answer


























                0












                0








                0







                i found the answer, this is my code, how to get inner ring from polygon



                string shapeFilePath = @"example.shp";
                
shapeFilePath = location + shapeFilePath;
                
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
                
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
                

                
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
                
{
                

                
    IFeature feature = indexMapFile.Features.ElementAt(i);
                
    IPolygon bp = feature.GetBasicGeometryN(0) as IPolygon;
                
    var all_polygon = bp.GetGeometryN(0);//include outer and inner ring, see this link -> https://stackoverflow.com/questions/8139739/wkt-how-do-you-define-polygons-with-3-rings-2-holes
                
    var outer_ring = bp.Shell.GetGeometryN(0);
                
    int idx_hole = 0;
                
    foreach (var hole in bp.Holes)
                
    {
                
        //get inner ring/hole from polygon
                
        Response.Write(bp.GetInteriorRingN(idx_hole));
                
        idx_hole++;
                
    }
                
}





                share|improve this answer













                i found the answer, this is my code, how to get inner ring from polygon



                string shapeFilePath = @"example.shp";
                
shapeFilePath = location + shapeFilePath;
                
Shapefile indexMapFile = Shapefile.OpenFile(shapeFilePath);
                
indexMapFile.Reproject(KnownCoordinateSystems.Geographic.Australia.GeocentricDatumofAustralia1994);
                

                
for (int i = 0; i < indexMapFile.DataTable.Rows.Count; i++)
                
{
                

                
    IFeature feature = indexMapFile.Features.ElementAt(i);
                
    IPolygon bp = feature.GetBasicGeometryN(0) as IPolygon;
                
    var all_polygon = bp.GetGeometryN(0);//include outer and inner ring, see this link -> https://stackoverflow.com/questions/8139739/wkt-how-do-you-define-polygons-with-3-rings-2-holes
                
    var outer_ring = bp.Shell.GetGeometryN(0);
                
    int idx_hole = 0;
                
    foreach (var hole in bp.Holes)
                
    {
                
        //get inner ring/hole from polygon
                
        Response.Write(bp.GetInteriorRingN(idx_hole));
                
        idx_hole++;
                
    }
                
}






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Jan 2 at 7:55









                Ahmad zainuriAhmad zainuri

                12




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