[ITK Community] [Insight-users] dot product of itk vector was completely wrong

[WANG Chengjia]

Now it solved! thank you very much! :)


On Wed, Feb 12, 2014 at 12:54 AM, Bradley Lowekamp
<blowekamp at mail.nih.gov>wrote:

> David,
>
> Thanks for updating the Wiki Examples.
>
> Brad
>
> On Feb 11, 2014, at 3:45 PM, David Doria <daviddoria at gmail.com> wrote:
>
> > On Tue, Feb 11, 2014 at 3:04 PM, Bradley Lowekamp
> > <blowekamp at mail.nih.gov> wrote:
> >> http://www.itk.org/Doxygen/html/classitk_1_1Vector.html
> >>
> >> The return type for the operator* for a dot product is
> Vector::ValueType, a
> >> scalar, not a vector.
> >>
> http://www.itk.org/Doxygen/html/classitk_1_1Vector.html#a51bad5a3835ffc0fbbc02d5437f7e691
> >>
> >> By assigning to to a new Vector are implicitly calling this constructor:
> >>
> http://www.itk.org/Doxygen/html/classitk_1_1Vector.html#a106ee9550311054cceb66015e98c6457
> >>
> >> The example is wrong. Watch your types.
> >>
> >> Brad
> >
> > Brad is right - the 'dotproduct' variable in the example should be a
> > VectorType::ComponentType, not just VectorType. I updated the page
> > with the fix.
> >
> > David
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>


-- 
Chengjia Wang
Phd Student,
University of Edinburgh
Clinical Research Imaging Center (CRIC)
Toshiba Medical Visualization Systems Europe, Ltd
Email: wangchengjia1986 at gmail.com
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