[vtkusers] vtkContourFilter and vectors?

[Charles Boivin]

Hi Malcom,

I saw those two later yesterday... I played around with vtkVectorNorm
but had some problems with it. I ended up writing my own filter object
that did just what I wanted (i.e. extracted a scalar from a vector, that
scalar being either a vector component or the magnitude). That was
actually a pretty simple thing to do. And I learned how to write custom
filters, to boot. :-)

Thanks for your suggestion,

Charles

>>> "Malcolm Drummond" <malcolm at geovision.co.za> 09/08/04 01:02am >>>
Hi Charles

How about vtkVectorNorm or vtkExtractVectorComponents before
contouring.

HTH
Malcolm

----- Original Message -----
From: "Charles Boivin" <Charles.Boivin at rwdiwest.com>
To: <vtkusers at vtk.org>
Sent: Tuesday, September 07, 2004 7:56 PM
Subject: [vtkusers] vtkContourFilter and vectors?


> Hello all,
>
> Is it possible to create contours using vtkContourFilter on vectors?
I
> would like to be able to contour either the magnitude, or individual
> components of a vector. I know vtkLookupTable allows one to map
colors
> based on vector magnitude or components... but I would like to get
> contours as well.
>
> In the event that this is not possible, are there filters that can
> either extract a component of a vector or its magnitude so that I
could
> feed that to the contour filter?
>
> Thank you in advance,
>
> Charles Boivin
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