ArcGIS Pro 3.2 API Reference Guide
ArcGIS.Core.Geometry Namespace / CompositeGeographicTransformation Class / Item Property
The index into the list of geographic transformations.
Example

In This Topic
    Item Property (CompositeGeographicTransformation)
    In This Topic
    Gets the single transformation at the specified index.
    Syntax
    public GeographicTransformation this[ 
       int index
    ]; {get;}
    Public ReadOnly Default Property Item( _
       ByVal index As Integer _
    ) As GeographicTransformation

    Parameters

    index
    The index into the list of geographic transformations.
    Example
    Create Composite Geographic Transformation
    // Create singleton from wkid
    CompositeGeographicTransformation cgt = 
        ArcGIS.Core.Geometry.CompositeGeographicTransformation.Create(108272);
    int count = cgt.Count;    // count = 1
    
    IList<GeographicTransformation> gts = cgt.Transformations 
                                    as IList<GeographicTransformation>;
    gts.Add(ArcGIS.Core.Geometry.GeographicTransformation.Create(1437, false));
    count = cgt.Count;        // count = 2
    
    // create from an enumeration
    CompositeGeographicTransformation another_cgt = 
                  ArcGIS.Core.Geometry.CompositeGeographicTransformation.Create(gts);
    GeographicTransformation gt0 = another_cgt[0];
    GeographicTransformation gt1 = another_cgt[1];
    
    // get the inverse
    CompositeGeographicTransformation inversed_cgt = another_cgt.GetInverse() as CompositeGeographicTransformation;
    // inversed_cgt[0] is same as gt1
    // inversed_cgt[1] is same as gt0
    
    var wkt = gt0.Wkt;
    // create from string 
    CompositeGeographicTransformation third_cgt = 
       ArcGIS.Core.Geometry.CompositeGeographicTransformation.Create(wkt, gt0.IsForward);
    count = third_cgt.Count;        // count = 1
    
    // create from josn
    string json = cgt.ToJson();
    CompositeGeographicTransformation joson_cgt = 
      DatumTransformation.CreateFromJson(json) as CompositeGeographicTransformation;
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also