[vtkusers] Basic Linear algebra in vtk

[Atwood, Robert C]

I find the VNL (vxl)  libraries for such things , that are inlcuded
along with ITK or available on their own  are quite compatible (at least
with ITK, haven't really used directly with VTK so far but I'm guessing
it's easy to incorporate the classes in a VTK application too) 

http://paine.wiau.man.ac.uk/pub/doc_vxl/index.html

> -----Original Message-----
> From: vtkusers-bounces+r.atwood=imperial.ac.uk at vtk.org 
> [mailto:vtkusers-bounces+r.atwood=imperial.ac.uk at vtk.org] On 
> Behalf Of Arne Hansen
> Sent: 10 January 2007 17:54
> To: VTK
> Subject: [vtkusers] Basic Linear algebra in vtk
> 
> I am writing my vtk-programs in c++. I have a matrix of 
> eigenshapes, a meanshape and a vector of eigenmodes.
> In order to visualize these (PCA-visualization) i need to 
> somehow multiply them in vtk with a variance vector 
> containing weights.
>  
> so
>  
> meanshape+eigenshapes*(weights*eigenmodes)
>  
> this will result in a vector which i then need to reshape 
> into a 3D volume before i can visualize it as an isosurface, 
> using the vtkContourFilter, in vtk.
>  
> These operations are very easily done in matlab, but how can 
> i do these matrix multiplications and matrix reshaping in VTK?
>  
> I  hope someone can help me out.
> Thank you very much
>