[Neuroimaging] Dipy Error in ROI Streamlines and Tracking

[Ariel Rokem]

Hi Jacob Antony,

I have finally had some time to investigate this and I posted an answer to
your same question over on neurostars: http://neurostars.org/p/4002/

Let me know if you have any further questions.

Cheers,

Ariel

On Tue, Jul 12, 2016 at 3:21 PM, Jacob Antony <antony at usc.edu> wrote:

> Hello,
>
> I am having issues with reading a trackvis file into the pipeline for ROI
> filtering: http://nipy.org/dipy/examples_built/streamline_tools.html
> I have checked the affine of the .trk file's header and it is [0 0 0 0; 0
> 0 0 0; 0 0 0 0; 0 0 0 1]
> However the .trk file and my DTI image have been registered together so
> they should have the same affine. Ultimately this leads to an error when I
> attempt to run utils.target
> ValueError: streamlines points are outside of target_mask
>
> This occurs when the include parameter is set to either true or false.
> What could be the issue? I have included a google drive with the T1 image,
> tractography file, corpus callosum mask, and the script I am using.
>
>
> https://drive.google.com/folderview?id=0B02Ea96nn-Igb0dYbU5QazRoMEE&usp=sharing
>
> Please let me know if you have an idea of what could be causing the error.
> Thank you all!
>
> Best,
>
> Jacob Antony
>
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