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What I would like to check is if the raster layer and feature layer have the same projection.

Code developed so far:

public void SpatialReferencEquality()
{
 var rasterLayer = ((ILayer)comboBox1.SelectedItem).ConvertToRasterLayer();
 var featureLayer = ((ILayer) comboBox2.SelectedItem).ConvertToFeatureLayer();
 var spRef1 = rasterLayer.SpatialReference;
 var spRef2 = featureLayer.SpatialReference;
 if(!IsSpatialReferenceSame(spRef1 , spRef2 )
  {
   MessegeBox.Show(" ");
  }
}
public static bool IsSpatialReferenceSame(ISpatialReference sp1, ISpatialReference sp2)
        {
        return sp1.Equals(sp2);
        }

 public bool Equals(ISpatialReference sp2)
        {
            var sp1Clone = this.Clone;
            var sp2Clone = sp2.Clone;
            return sp1Clone.IsEqual(sp2Clone);
        }

But IsSpatialReferenceSame returns False, why?


In my case horizontal parameters are same of projection system of the layers. But there is a mismatch of vertical parameters. For this reason return false.

  • It is solved. Horizontal projection parameters are same but vertical projection parameters are not same. – osman May 13 '17 at 6:35
  • write the answer in the answer box and then approve it so this does shows as ab answered question. – If you do not know- just GIS Feb 25 at 14:19
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You should try comparing the ISpatialReferenceInfo.Name property. This would essentially be a string comparison and would be much more straight forward.

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You could try and use the Interface ICompareCoordinateSystems?

I'm wondering if it is failing the test because one is named BTM and the other is Transverse_Mercator_complex?

  • Projection are same Transverse_Mercator_complex. Feature layer and raster layer. – osman Nov 30 '16 at 4:53

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