Thanks for your reply! I'm not having any trouble reading the
original unstructured points as an image, but I didn't see why the
data type was getting switched to an unstructured grid.
Now I've realize this was done by ExtractCellsByRegion, which makes
sense. I switched to Extract Subset, which outputs structured points,
and this works just fine. However, the ROI selection is pretty
limited since it only allows the selection using a cube, from what I
can tell. I've also tried Extract Selection, but Paraview crashes
each time I try to use the selection tools.
Any tips on a better way to do this would be appreciated!
Sara
On Sep 21, 2010, at 1:12 PM, Moreland, Kenneth wrote:
VTK has a data type called structured grid that is different than
image data (and also different than unstructured grid). If ParaView
is not telling you that your data is image data or a uniform grid,
then the data you write out will be necessarily incompatible with
reading it as an image file.
-Ken
On 9/21/10 11:55 AM, "Sara Rolfe" <smro...@u.washington.edu> wrote:
Hello,
I'm new to Paraview and am trying to use it to edit a VTK image. My
original image is in the structured points format. I'm using the
ExtractCellsByRegion filter to select a subset, which I save using
Save Data with a VTK extension like the original. However, I could
not open this file using the ITK ImageFileReader. I believe this is
because the VTK file was saved as an unstructured grid instead of
structured points.
Does anyone know why this is happening and how to change it? I can
look at converting it using ITK, but I'd like to know if there's a
better solution.
Thanks,
Sara
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