Hi Robert,
Good one! The slice rep uses GPU textures and this behavior looks a bug
in the logic that sets up the texture. You should file a bug report.
There's an easy workaround. Convert to a positive spacing and adjust the
origin accordinigly. The data will the occupy the same region. Here's
how your file looks then:
--8<--
# vtk DataFile Version 2.0
testing
ASCII
DATASET STRUCTURED_POINTS
DIMENSIONS 3 4 1
ORIGIN 0.0 -2.25 0.0
SPACING 0.5 0.75 1.0
POINT_DATA 12
SCALARS test float
LOOKUP_TABLE default
0.0
1.0
2.0
1.0
2.0
3.0
2.0
3.0
4.0
3.0
4.0
5.0
-->8--
Burlen
On 09/18/2014 11:56 PM, Robert-Zoltan Szasz wrote:
Hi,
I tried to visualize 2D structured point data when I observed a
strange behavior. If the spacing in Y direction is negative, the data
is flipped upside-down in 'Slice' representation mode but shown
properly as a 'Surface' representation. Tried in v. 4.0.1 and 4.2rc1
on Linux 64 bit. Here is a small VTK file to test:
--8<--
# vtk DataFile Version 2.0
testing
ASCII
DATASET STRUCTURED_POINTS
DIMENSIONS 3 4 1
ORIGIN 0.0 0.0 0.0
SPACING 0.5 -0.75 1.0
POINT_DATA 12
SCALARS test float
LOOKUP_TABLE default
0.0
1.0
2.0
1.0
2.0
3.0
2.0
3.0
4.0
3.0
4.0
5.0
-->8--
I am wondering if I missed something when formatting the file or if
you have any ideas how to avoid this behavior?
Thanks,
Robert
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