<HTML dir=ltr><HEAD><TITLE>[vtkusers] VTK Tcl/Tk linear algebra?</TITLE>
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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>Take a look at the free Hunm tcl la package.</FONT></DIV>
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<DIV><FONT face=Arial color=#000000 size=2>Tron Darvann</FONT></DIV>
<DIV><FONT face=Arial size=2>Research Engineer, PhD, 3D-Laboratory</FONT></DIV>
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<DIV><FONT face=Arial size=2><U>Tel:</U> (+45) 35 32 67 58 (lab) / (+45) 28 20 03 12 (mobile)</FONT></DIV>
<DIV><FONT face=Arial size=2><U>E-mail:</U> <A href="mailto:trd@odont.ku.dk">trd@odont.ku.dk</A></FONT></DIV>
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<FONT face=Tahoma size=2><B>Fra:</B> vtkusers-bounces+trd=odont.ku.dk@vtk.org på vegne af Marty Humperdink<BR><B>Sendt:</B> to 19-10-2006 17:55<BR><B>Til:</B> vtkusers@vtk.org<BR><B>Emne:</B> [vtkusers] VTK Tcl/Tk linear algebra?<BR></FONT><BR></DIV>
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<P><FONT size=2>Hello. I'm trying to solve a problem of fitting a<BR>circle to a set of about 1000 x,y points. The points<BR>are a little noisy and fall along an arc of a circle<BR>over about 150degrees. This fitting problem is a small<BR>part of a utility that I have been writing in VTK with<BR>Tcl/Tk. The bulk of the project is visualization and<BR>this is just a minor piece.<BR><BR>I have used one method for this circle fitting problem<BR>in Octave/Matlab that relies on solving Ax=B (where A<BR>is a two column list of point data) using Gaussian<BR>Elmination. I'd like to find an easy solution to do<BR>something similar within my VTK Tcl/Tk program.<BR><BR>I realize that neither VTK nor Tcl/Tk are meant to be<BR>compute engines for this kind of problem but I'm<BR>hoping to find some (reasonably) easy way to handle<BR>this within my existing work (which is based just on<BR>VTK and Tcl/Tk). I have some awareness from web<BR>searches that there are projects to allow Octave calls<BR>from Tcl/Tk but I'd ideally hope to find either a VTK<BR>class or some Tcl code that will allow relatively<BR>efficient (it doens't need to be super fast) matrix<BR>manipulation and linear algebra operations without<BR>having to spend the time to install/learn a new<BR>project or package.<BR><BR>Can anyone suggestion a resource for handling basic<BR>linear algebra in VTK Tcl/Tk projects?<BR><BR>__________________________________________________<BR>Do You Yahoo!?<BR>Tired of spam? Yahoo! Mail has the best spam protection around<BR><A href="http://mail.yahoo.com/">http://mail.yahoo.com</A><BR>_______________________________________________<BR>This is the private VTK discussion list.<BR>Please keep messages on-topic. Check the FAQ at: <A href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ</A><BR>Follow this link to subscribe/unsubscribe:<BR><A href="http://www.vtk.org/mailman/listinfo/vtkusers">http://www.vtk.org/mailman/listinfo/vtkusers</A><BR></FONT></P></DIV></BODY></HTML>