View Issue Details [ Jump to Notes ]

[ Print ]

Project

Category

View Status

Date Submitted

Last Update

0015894

ParaView

(No Category)

public

2015-12-19 09:56

2016-08-12 09:59

Reporter

Nico Schlömer

Assigned To

Kitware Robot

Priority

normal

Severity

minor

Reproducibility

have not tried

Status

closed

Resolution

moved

Platform

OS Version

Product Version

Target Version

Fixed in Version

Summary

0015894: vtkExodusIIWriter: _ (underscore) added only to 2D data arrays

Description

When writing 1D or 3D data arrays, the name of the array is preserved in the output file. When writing 2D data arrays, however, an underscore (_) is added to the name.

MWE:
```
import numpy
import vtk
from vtk.util import numpy_support

points = [
    [0.0, 0.0, 0.0],
    [1.0, 0.0, 0.0],
    [1.0, 1.0, 0.0],
    ]

mesh = vtk.vtkUnstructuredGrid()

# set points
vtk_points = vtk.vtkPoints()
# Not using a deep copy here results in a segfault.
vtk_array = vtk.util.numpy_support.numpy_to_vtk(points)
vtk_points.SetData(vtk_array)
mesh.SetPoints(vtk_points)

c = numpy.array([
    3,
    0, 1, 2,
    ], dtype=int)
a = vtk.util.numpy_support.numpy_to_vtkIdTypeArray(c)

cell_array = vtk.vtkCellArray()
cell_array.SetCells(1, a)
mesh.SetCells(vtk.VTK_TRIANGLE, cell_array)

# add point data
pd = mesh.GetPointData()

A = numpy.array([7, 3, -2], dtype=float)
array = vtk.util.numpy_support.numpy_to_vtk(A)
array.SetName('A')
pd.AddArray(array)

B = numpy.array([[7, 1], [3, 2], [-2, 0]], dtype=float)
array = vtk.util.numpy_support.numpy_to_vtk(B)
array.SetName('B')
pd.AddArray(array)

C = numpy.array([[7, 1, 3], [3, 2, -2], [-2, 0, 7]], dtype=float)
array = vtk.util.numpy_support.numpy_to_vtk(C)
array.SetName('C')
pd.AddArray(array)

# writer = vtk.vtkUnstructuredGridWriter()
# writer.SetFileName('test.vtk')

writer = vtk.vtkExodusIIWriter()
writer.SetFileName('test.e')

writer.SetInputData(mesh)
writer.Write()
```
Open the file in, e.g., ParaView and observe the difference between A, B_, C.

When using the `vtkUnstructuredGridWriter` to write VTK files (any other file type, in fact), no underscore is added.

Tags

No tags attached.

Project

TBD

Topic Name

Type

incorrect functionality

Attached Files

Relationships

Notes
(0038957) Kitware Robot (administrator) 2016-08-12 09:59	Resolving issue as `moved`. This issue tracker is no longer used. Further discussion of this issue may take place in the current ParaView Issues page linked in the banner at the top of this page.

Issue History
Date Modified	Username	Field	Change
2015-12-19 09:56	Nico Schlömer	New Issue
2016-08-12 09:59	Kitware Robot	Note Added: 0038957
2016-08-12 09:59	Kitware Robot	Status	backlog => closed
2016-08-12 09:59	Kitware Robot	Resolution	open => moved
2016-08-12 09:59	Kitware Robot	Assigned To	=> Kitware Robot