[vtkusers] VTK Tcl/Tk linear algebra?

[H.Vidal, Jr.]

A quick search of wiki.tcl.tk under 'algebra' suggests
this:
http://www.hume.com/la/index.html

Perhaps this is useful.

Hernando Vidal, Jr.
Tesseract Technology

Marty Humperdink wrote:
> Hello. I'm trying to solve a problem of fitting a
> circle to a set of about 1000 x,y points. The points
> are a little noisy and fall along an arc of a circle
> over about 150degrees. This fitting problem is a small
> part of a utility that I have been writing in VTK with
> Tcl/Tk. The bulk of the project is visualization and
> this is just a minor piece.
> 
> I have used one method for this circle fitting problem
> in Octave/Matlab that relies on solving Ax=B (where A
> is a two column list of point data) using Gaussian
> Elmination. I'd like to find an easy solution to do
> something similar within my VTK Tcl/Tk program. 
> 
> I realize that neither VTK nor Tcl/Tk are meant to be
> compute engines for this kind of problem but I'm
> hoping to find some (reasonably) easy way to handle
> this within my existing work (which is based just on
> VTK and Tcl/Tk). I have some awareness from web
> searches that there are projects to allow Octave calls
> from Tcl/Tk but I'd ideally hope to find either a VTK
> class or some Tcl code that will allow relatively
> efficient (it doens't need to be super fast) matrix
> manipulation and linear algebra operations without
> having to spend the time to install/learn a new
> project or package. 
> 
> Can anyone suggestion a resource for handling basic
> linear algebra in VTK Tcl/Tk projects? 
> 
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