[vtkusers] How to combine multiple arrays ?

[Cory Quammen]

You should be able to multiply your components by the iHat, jHat, and kHat
unit vectors to get a 3-tuple output array, e.g.,

(X11*cos(a)+X21*sin(a)*iHat) + (Y11*cos(a)+Y21*sin(a)*jHat) + (
Z11*cos(a)+Z21*sin(a))*kHat

iHat represents the vector (1, 0 0), jHat represents (0, 1, 0), and kHat
represents (0, 0, 1).

HTH,
Cory

On Thu, Jul 2, 2015 at 10:27 AM, mightos <mightos at gmail.com> wrote:

> Thanks.
>
> The *vtkArrayCalculator* seems like a good solution indeed (I've never used
> vtkProgrammableFilter but I'll take a look at it also).
>
> One last question though, even if I use *multicomponent *arrays in the
> vtkArrayCalculator Function, I always get a array with* one *component
> only.
>
> Is there a way to get a multicomponent array as an output ?
> Or should I use 3 vtkArrayCalculator (one for X, one for Y and the last one
> for Z) and then recombine the 3 outputs into a multicomponent array ?
> If I have to recombine I'll still be stuck on that operation (which is just
> basically appending 3 columns)
>
> Thank you for your help.
>
>
>
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-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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