[vtkusers] Merging an example with my data
natorenvliet at gmail.com
Thu Oct 19 20:45:51 EDT 2017
I am looking at the pointToCellData.py example.
In that example an unstructured grid reader opens a .vtk file and extracts
some named unstructured grid scalar and vector data like so...
reader = vtk.vtkUnstructuredGridReader()
reader.SetFileName(VTK_DATA_ROOT + "/Data/blow.vtk")
p2c = vtk.vtkPointDataToCellData()
warp = vtk.vtkWarpVector()
thresh = vtk.vtkThreshold()
thresh.SetInputArrayToProcess(1, 0, 0, 0, "thickness9")
In the code I've written to front end this, I want to replace the reader
with my own method for extracting an unstructured grid like so...
gap_data_block, gap_file_info = getgap.get_gap_data_from_files(gap_file)
points = vtk.vtkPoints()
ugrid = vtk.vtkUnstructuredGrid()
Where gap_data_block is a numpy array of shape (n,3) carrying data for
dimensions are x/y/z.
Ultimately I want to get a surface elevation plot of gap_data_block by
working through the example code cited above.
As part of this (extremely) pedagogical experience, I feel I need to do two
1. Find a way to label columns one and two of get_data_block as a vector
using some equivalent to reader.SetVectorsName()
2. Find a way to label columns three of get_data_block as a scalar using
some equivalent to reader.SetVectorsName()
3. Find a way to set the input connection, or input data of a
vtkPointDataToCellData object to my vtkUnstructuredGrid object ugrid.
I've been looking at this for a few hours now, any help getting my ugrid to
an elevation plot would be appreciated.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the vtkusers