[Insight-users] GetGradientImage() ?

[motes motes]

Where is the GetGradientImage() function defined? I the file:

     itkMeanSquaresImageToImageMetric.txx

it is used like this:


      const GradientPixelType gradient =
this->GetGradientImage()->GetPixel( mappedIndex );

But when I try to go to the definition I just get an error that it
does not exists. I have also tried looking at:


   http://www.itk.org/Doxygen/html/classes.html

But its not possible to search for member functions only classes.