[vtkusers] Visualise all point arrays of polydata - problem with setting and changing active scalar

[Jana Sefcikova]

Hi Jochen, thank you, it helped me with glyph.
But still for mappers, I need specify explicitly active scalar range
regardless presetting scalar using  SetInputArrayToProcess.
If I will compute some value for one input, it will not be
updated automatically  when I change the input.
I do understand that user can explicitly specify scalar range for mapping
via lookup table, but range could be automatically obtain from input array
to process scala range .
But I can not find way how to ensure it for mappers, perhaps it can not be
configured like this... ?

Jana


On 7 June 2012 02:01, Jochen K. <jochen.kling at email.de> wrote:

> Hi Jana,
>
> with SetInputArrayToProcess you set what array is to be used for the
> scalars, vectors, normals, and color scalars.
>
> "idx" stands for:
>
> 0 == scalars
> 1 == vectors
> 2 == normals
> 3 == color scalars
>
> So if you want your array "array1" to specify the color, then idx must be 3
> and "array1" of type vtkCharArray (with one component). If you want your
> array to specify the point normals e.g, then idx must be 1 and "array1" of
> type vtkDouble (with three components).
>
> (I use SetInputArrayToProcess to tell my glyph3D object which array to use
> for orientation and for scaling.)
>
> Port and Connection I set to 0 always. What it stands for I can only assume
> at the moment but won't tell, because it might be wrong. ;-)
>
>
> Hope that helps a little bit.
>
> with best regards
> Jochen
>
>
> --
> View this message in context:
> http://vtk.1045678.n5.nabble.com/Visualise-all-point-arrays-of-polydata-problem-with-setting-and-changing-active-scalar-tp5713633p5713637.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
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