MantisBT - ParaView
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IDProjectCategoryView StatusDate SubmittedLast Update
0015894ParaView(No Category)public2015-12-19 09:562016-08-12 09:59
ReporterNico Schlömer 
Assigned ToKitware Robot 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionmoved 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
ProjectTBD
Topic Name
Typeincorrect functionality
Summary0015894: vtkExodusIIWriter: _ (underscore) added only to 2D data arrays
DescriptionWhen 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.
Steps To Reproduce
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Issue History
Date ModifiedUsernameFieldChange
2015-12-19 09:56Nico SchlömerNew Issue
2016-08-12 09:59Kitware RobotNote Added: 0038957
2016-08-12 09:59Kitware RobotStatusbacklog => closed
2016-08-12 09:59Kitware RobotResolutionopen => moved
2016-08-12 09:59Kitware RobotAssigned To => Kitware Robot

Notes
(0038957)
Kitware Robot   
2016-08-12 09:59   
Resolving issue as `moved`.

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