Create TrigOp ATan2 Raster Snippet (ArcObjects .NET 10.6 SDK)
ArcObjects Library Reference

Create TrigOp ATan2 Raster Snippet

Create an inverse tangent raster from two input GeoDataset's.

[C#]
/// <summary>
/// Create an inverse tangent raster from two input GeoDataset's.
/// </summary>
/// <param name="geoDataset_x">An IGeoDataset interface that has cell values that are the numerator (x).</param>
/// <param name="geoDataset_y">An IGeoDatasett interface that has cell values that are the denominator (y).</param>
/// <returns>An IGeoDataset interface that is the result of an inverse tanget from two input rasters (x/y).</returns>
/// <remarks>
/// Note: the input geoDataset's must be of Type IRaster, IRasterDataset, IRasterBand, or IRasterDescriptor.
/// 
/// For information about the ITrigOp.ATan2 Method see:
/// http://edndoc.esri.com/arcobjects/9.2/ComponentHelp/esriSpatialAnalyst/ITrigOp_ATan2.htm
/// 
/// For more information on working with the ArcGIS Spatial Anaylst objects see:
/// http://edndoc.esri.com/arcobjects/9.2/CPP_VB6_VBA_VCPP_Doc/COM/VB6/working/work_rasters/sptl_analyst_objs.htm
/// </remarks>
public ESRI.ArcGIS.Geodatabase.IGeoDataset CreateTrigOpATan2Raster(ESRI.ArcGIS.Geodatabase.IGeoDataset geoDataset_x, ESRI.ArcGIS.Geodatabase.IGeoDataset geoDataset_y)
{

    if ((geoDataset_x is ESRI.ArcGIS.Geodatabase.IRaster | geoDataset_x is ESRI.ArcGIS.Geodatabase.IRasterDataset | geoDataset_x is ESRI.ArcGIS.DataSourcesRaster.IRasterBand | geoDataset_x is ESRI.ArcGIS.GeoAnalyst.IRasterDescriptor) & (geoDataset_y is ESRI.ArcGIS.Geodatabase.IRaster | geoDataset_y is ESRI.ArcGIS.Geodatabase.IRasterDataset | geoDataset_y is ESRI.ArcGIS.DataSourcesRaster.IRasterBand | geoDataset_y is ESRI.ArcGIS.GeoAnalyst.IRasterDescriptor))
    {

        // Create the MathOps object                            
        ESRI.ArcGIS.SpatialAnalyst.ITrigOp trigOp=new ESRI.ArcGIS.SpatialAnalyst.RasterMathOpsClass();

        // Declare the output raster object                     
        ESRI.ArcGIS.Geodatabase.IGeoDataset geodataset_output=trigOp.ATan2(geoDataset_x, geoDataset_y);

        return geodataset_output;

    }
    else
    {

        //Invalid type of GeoDataset for this process
        return null;

    }

}
[Visual Basic .NET]
''' <summary>
''' Create an inverse tangent raster from two input GeoDataset's.
''' </summary>
''' <param name="geoDataset_x">An IGeoDataset interface that has cell values that are the numerator (x).</param>
''' <param name="geoDataset_y">An IGeoDatasett interface that has cell values that are the denominator (y).</param>
''' <returns>An IGeoDataset interface that is the result of an inverse tanget from two input rasters (x/y).</returns>
''' <remarks>
''' Note: the input geoDataset's must be of Type IRaster, IRasterDataset, IRasterBand, or IRasterDescriptor.
''' 
''' For information about the ITrigOp.ATan2 Method see:
''' http://edndoc.esri.com/arcobjects/9.2/ComponentHelp/esriSpatialAnalyst/ITrigOp_ATan2.htm
''' 
''' For more information on working with the ArcGIS Spatial Anaylst objects see:
''' http://edndoc.esri.com/arcobjects/9.2/CPP_VB6_VBA_VCPP_Doc/COM/VB6/working/work_rasters/sptl_analyst_objs.htm
''' </remarks>
Public Function CreateTrigOpATan2Raster(ByVal geoDataset_x As ESRI.ArcGIS.Geodatabase.IGeoDataset, ByVal geoDataset_y As ESRI.ArcGIS.Geodatabase.IGeoDataset) As ESRI.ArcGIS.Geodatabase.IGeoDataset

  If (TypeOf geoDataset_x Is ESRI.ArcGIS.Geodatabase.IRaster _
  Or TypeOf geoDataset_x Is ESRI.ArcGIS.Geodatabase.IRasterDataset _
  Or TypeOf geoDataset_x Is ESRI.ArcGIS.DataSourcesRaster.IRasterBand _
  Or TypeOf geoDataset_x Is ESRI.ArcGIS.GeoAnalyst.IRasterDescriptor) _
  And (TypeOf geoDataset_y Is ESRI.ArcGIS.Geodatabase.IRaster _
  Or TypeOf geoDataset_y Is ESRI.ArcGIS.Geodatabase.IRasterDataset _
  Or TypeOf geoDataset_y Is ESRI.ArcGIS.DataSourcesRaster.IRasterBand _
  Or TypeOf geoDataset_y Is ESRI.ArcGIS.GeoAnalyst.IRasterDescriptor) Then

    ' Create the MathOps object                         
    Dim trigOp As ESRI.ArcGIS.SpatialAnalyst.ITrigOp=New ESRI.ArcGIS.SpatialAnalyst.RasterMathOpsClass

    ' Declare the output raster object                  
    Dim geodataset_output As ESRI.ArcGIS.Geodatabase.IGeoDataset=trigOp.ATan2(geoDataset_x, geoDataset_y)

    Return geodataset_output

  Else

    'Invalid type of GeoDataset for this process
    Return Nothing

  End If

End Function

Additional Requirements
  • The code in this document requires the following References added to the Visual Studio project:
  • ESRI.ArcGIS.DataSourcesRaster
  • ESRI.ArcGIS.GeoAnalyst
  • ESRI.ArcGIS.Geodatabase
  • ESRI.ArcGIS.SpatialAnalyst
  • ESRI.ArcGIS.System