[Insight-developers] GetNorm()

[Bill Lorensen]

Marius,

In the future, please add a bug for issues like this. Instructions are at:

http://www.itk.org/Wiki/ITK_Procedure_for_Contributing_Bug_Fixes

We do check the bug tracker on a regular basis. E-mail to the list is a good
start to bring attention to an issue, but the bugs registered with the bug
tracker are not so easily forgotten.

Thanks,

Bill

On Jan 21, 2008 12:18 PM, Marius Staring <marius at isi.uu.nl> wrote:

> Hi,
>
> could one of the developers reply to this mail?
>
> Regards,
>
> Marius
>
> Marius Staring wrote:
> > Hi developers,
> >
> > I think the itk::VariableLengthVector is missing a function GetNorm(),
> > similar to itk::Vector
> >
> > This can be fixed by adding
> >
> >  /** Returns vector's Euclidean Norm  */
> >  RealValueType GetNorm() const;
> >
> > to the header file, and
> >
> > /**
> > * Returns vector's Euclidean Norm
> > */
> > template < typename TValueType >
> > typename VariableLengthVector< TValueType >::RealValueType
> > VariableLengthVector<TValueType >
> > ::GetNorm( void ) const
> > {
> >  return RealValueType( vcl_sqrt(double(this->GetSquaredNorm()) ));
> > }
> >
> > to the txx. I tested this code under windows xp and visual c++ 2003.
> >
> > The function GetNorm() is for example used in the
> > GradientToMagnitudeImageFilter, so currently this filter won't work
> > with images of VariableLengthVector pixel type.
> >
> > Regards,
> >
> > Marius
> >
>
> --
> Marius Staring
> Image Sciences Institute
> University Medical Centre Utrecht
> Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
> phone: +31 (0)88 75 53186, fax: +31 (0)30 251 3399
> marius at isi.uu.nl, http://www.isi.uu.nl/People/Marius
>
> _______________________________________________
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> Insight-developers at itk.org
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>
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