[Paraview] simple Programmable Source

[Cory Quammen]

Randy,

Try setting a name on the array with

scalars.SetName('array_name')

This should let you select this array as the color array in ParaView.

- Cory

On Wed, Oct 11, 2017 at 9:48 PM, Heiland, Randy <heiland at iu.edu> wrote:

> I create the following in the Pgmable Source in PV, but cannot figure out
> how to color the resulting points or 3D glyphs using the scalar values.
> What am I missing?
> -Randy
>
> # Get a vtk.PolyData object for the output
> pdo = self.GetPolyDataOutput()
>
> # Create points
> num_pts = 3
> newPts = vtk.vtkPoints()
> scalars = vtk.vtkFloatArray()
>
> xval = -1.0
> for idx in range(0, num_pts):
>   # rf. PhysiCell User Guide for these array indices to a cell's position.
>   x = xval
>   y = 0.0
>   z = 0.0
>   newPts.InsertPoint(idx, x,y,z)
>   sval = xval*2
>   scalars.InsertNextValue(sval)
>   xval += 1.0
>
> # Add the points to the vtkPolyData object.
> pdo.SetPoints(newPts)
> pdo.GetPointData().SetScalars(scalars)
>
> verts = vtk.vtkCellArray()
> for idx in range(0, num_pts):
>   verts.InsertNextCell(1)
>   verts.InsertCellPoint(idx)
>
> pdo.SetVerts(verts)
>
>
>
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-- 
Cory Quammen
Staff R&D Engineer
Kitware, Inc.
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