[Insight-users] how to template the image dimension or vector dimesion in template function

[Baoyun Li]

Dear Andreas and all:

Can you please teach me how to template the image dimension or vector dimesion in template function.

In the following template function, if I give the vector dimension as

typedef typename itk::Vector< double,NumberOfComponents> MeasurementVectorType;

where Numberof compoents is obtained as trait
const unsigned int NumberOfComponents=VectorPixelType::GetVectorDimension();

The program cannot be build.

Why and how to solve the problem?

Thanks

Baoyun



template <unsigned int Dim,unsigned int NumberOfComponents1,class TInputFilter,  class TOutputFilter>
void EMClustering( typename TInputFilter::Pointer& inputfilter, typename TOutputFilter::Pointer& outputfilter)
{
   typedef typename TInputFilter::PixelType VectorPixelType;
   typedef typename TInputFilter::PixelType::SizeType Num;
   const unsigned int NumberOfComponents=VectorPixelType::GetVectorDimension();
   const unsigned int Dim1=TInputFilter::GetImageDimension();
   
  typedef typename itk::Vector< double,NumberOfComponents> MeasurementVectorType;
  typedef typename itk::Statistics::ListSample< MeasurementVectorType > SampleType;
 // SampleType::Pointer sample = SampleType::New();
 // sample->SetMeasurementVectorSize(NumberOfComponents );
 // MeasurementVectorType mv;
 
};
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