[vtkusers] Cutting a 2D dataset with a vtkImplicitDataSet

[Paul Cochrane]

Dave,

Many thanks!  That worked a treat!  :-)

Paul

> >
> > I'm trying to extract data from a 2D data set by using the output of
> another
> > data set via vtkImplicitDataSet, but am having problems doing it.
> >
> > I have a data set, a contour of which defines the surface of a volcano
> dome.
> > I then want to use this (arbitrary) contour to extract temperature data
> from
> > another data set.
> 
> Gidday Paul,
>     Take a look at vtkProbeFilter, you should be able to use a contour as
> the "Input" and sample the other data set with it.
>   Dave P
> 
> >                    To do this I define the contour to be the input to
> > vtkImplicityDataSet, and then use this as the cut function to apply to
> the
> > temperature data.  The weird thing is that the output of cutter is a very
> > small section at one end of the contour, and not some interpolated
> version
> > of the temperature data all along the contour.  If I cut the temperature
> > data with a sphere as the cut function I get a nice circle as output as
> > expected, also if I use a plane, I get a nice line, as one would expect,
> but
> > when I use vtkImplictDataSet the data doesn't seem to get interpolated
> onto
> > the cut function and only this little part is extracted.
> >
> > Has anyone got any ideas of how I could get this to work?  Any ideas as
> to
> > what I'm doing wrong?  Any help would be greatly appreciated.
> >
> > Regards,
> >
> > Paul
> >
> > --
> > Paul Cochrane
> > Computational Scientist/Software Developer
> > Earth Systems Science Computational Centre
> > Rm 703, SMI Building
> > University of Queensland
> > Brisbane
> > Queensland 4072
> > Australia
> >
> > E: cochrane at esscc.uq.edu.au
> > P: +61 7 3346 4109
> > F: +61 7 3365 7347
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-- 
Paul Cochrane
Computational Scientist/Software Developer
Earth Systems Science Computational Centre
Rm 703, SMI Building
University of Queensland
Brisbane
Queensland 4072
Australia

E: cochrane at esscc.uq.edu.au
P: +61 7 3346 4109
F: +61 7 3365 7347