How to create an AdjustXform for georeferencing images

Creating an AdjustXform for georeferencing images

[C#]

public IAdjustXform CreateAdjustXform(IPointCollection sourcePoints,
    IPointCollection targetPoints, ISpatialReference sr)
{
    //This example creates an AdjustXform.
    IAdjustXform adjustXF=new AdjustXformClass();

    //Set control points and the polynomial order used.
    adjustXF.DefineFromControlPoints(sourcePoints, targetPoints);
    adjustXF.PolynomialApproximation=2;

    //Use interpolation to do the adjustment.
    adjustXF.NaturalNeighbor=true;

    //You can also define the spatial reference of the Xform.
    adjustXF.SpatialReference=sr;
    return adjustXF;
}

[VB.NET]

Public Function CreateAdjustXform(ByVal sourcePoints As IPointCollection, ByVal targetPoints As IPointCollection, ByVal sr As ISpatialReference) As IAdjustXform
    'This example creates an AdjustXform.
    Dim adjustXF As IAdjustXform=New AdjustXformClass()
    
    'Set control points and the polynomial order used.
    adjustXF.DefineFromControlPoints(sourcePoints, targetPoints)
    adjustXF.PolynomialApproximation=2
    
    'Use interpolation to do the adjustment.
    adjustXF.NaturalNeighbor=True
    
    'You can also define the spatial reference of the Xform.
    adjustXF.SpatialReference=sr
    
    Return adjustXF
End Function

See Also:

How to perform a geodata transformation on a raster

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To use the code in this topic, reference the following assemblies in your Visual Studio project. In the code files, you will need using (C#) or Imports (VB .NET) directives for the corresponding namespaces (given in parenthesis below if different from the assembly name):

• ESRI.ArcGIS.System (ESRI.ArcGIS.esriSystem)
• ESRI.ArcGIS.Display
• ESRI.ArcGIS.Geometry
• ESRI.ArcGIS.Geodatabase
• ESRI.ArcGIS.DataSourcesRaster

Development licensing	Deployment licensing
ArcGIS Desktop Advanced
ArcGIS Desktop Standard	ArcGIS Desktop Advanced
ArcGIS Desktop Basic	ArcGIS Desktop Standard
Engine Developer Kit	ArcGIS Desktop Basic
	Engine