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[SCIRUN-USERS] Importing .nrrd failed

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  • From: Andjela Davidovic <>
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  • Subject: [SCIRUN-USERS] Importing .nrrd failed
  • Date: Wed, 29 Jul 2015 21:14:09 +0200 (CEST)


I have some files in .vtk format. These are MRI images of the heart and DT vector files for fiber orientations. I want to read them with SCIRun. I did the following:
- take one vector .vtk file and convert it into 3 scalar .vtk files.
- import these files ,vtk files into Seg3D and export them, unchanged as .nrrd files. - this worked, as I was able to import them back into seg3d.
Now I want to use SCIRun4, in order to create and visualise fibers (and later on to map them to the segmentation - since I am not going to use the whole heart data).
The problem is that SCIRun4 does not want to import them - it says there is a spacing error.

The header of one of these files looks like this:

# Complete NRRD file format specification at:
type: float
dimension: 3
sizes: 64 64 128
spacings: 0,20000000000000001 0,20000000000000001 0,20000000000000001
axis mins: -0,10000000000000001 -0,10000000000000001 -0,10000000000000001
centerings: cell cell cell
endian: little

SCIRun5 imports them, but it does not plot what I would like to see, although maybe I am plotting it wrong.
And anyway, in SCIRun5 I did not find the module to crate a vector field out of 3 scalar fields.

Any advice?


Andjela Davidovic
PhD Student, CARMEN team

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