[vtkusers] Setting multiple scalars to a dataset

[Berk Geveci]

If they all fit in memory, keep them around (AddArray). You can 
then decide which one to use in a filter or to color by without
having to reload the file. Make sure that they all have names
so that you can access them easily.

It is possible some of the documentation is not up-to-date. This
is why we have a FAQ page which list the changes as well as a
User's Guide updated regularly.

-Berk

On Fri, 2002-05-31 at 09:16, Steve Boyd wrote:
> Hi Bert,
> 
> Thanks for your help!  I checked the examples (yes, I'm using vtk 4.x)
> and the e-mail archive.  As you suggested, I'll make a separate array
> for every scalar (actually 14 in total) and every vector (2 arrays) data
> set.  That's a lot of arrays...
> 
> Looking at the Arrays.tcl example, I'd then assign one of those arrays
> to the data set using the ->SetScalars, or ->SetVectors methods. 
> Question: Should I also 'add' all the arrays (even the ones that are
> unused) to the data set using the ->AddArray method?  Will this prevent
> me from having to re-read my original data file everytime I want to
> update the pipeline?  Otherwise, why 'add' arrays?
> 
> By the way, I think that the manuals are not very up to date with the
> changes to vtk in 4.x.
> 
> Thanks again for your help!!
> 
> Sincerely,
> 
> Steve
> 
> 
> -- 
> Steven Boyd, PhD
> 
> Institute for Biomedical Engineering
> ETH and University Zuerich
> Moussonstrasse 18
> 8044 Zuerich, Switzerland
> 
> tel. +41.1.632.4591  fax. +41.1.632.1214  boyd at biomed.ee.ethz.ch
> -------------------------------------------------------------------