[tderamus]

Hi BrainSuite Experts.

I’m attempting to reconstruct some tensors I computed using Matlab and FSL to visualize them in Brainsuite, but I’m at a loss as to how to construct and load these images into Brainsuite.

I know in the documentation it says the .eig.nii.gz files contain eigenvalues and eigenvectors, but are these stacked as a timeseries?

More importantly, is it all eigenvalues and then all eigenvectors? Or is it each eigenvalue followed by its corresponding vectors in time?

Thank you.

[divarada]

You can use the following function available in our source code release to generate eig.nii.gz files that can be visualized on BrainSuite.

function generate_eig_file(L1, L2, L3, V1, V2, V3, outputFileName)
%GENERATE_EIG Generate .eig file. Eigenvalues (L1, L2, L3) &
% Eigenvectors(V1, V2, V3) can be nii structures or .nii.gz or .nii files.
%
% outputFileName – file name with/without extension (with full path)
%

As you can see in the description, it just needs the tensor eigenvalues and eigenvectors. The function concatenates these files in a certain way that BrainSuite understands. It should be clear when you just look at this function.

Thanks.

[tderamus]

My apologies,

But I’ve gone through the the BrainSuite GUI and command line tools and the BDP source code and I can’t seem to locate this function in either.

I can’t seem to locate a command in my linux installation of Brainsuite17a either.

Would you happen to be able to point me to the download in which is located? Or the command in linux I would use?

[tderamus]

Nevermind I just found it in:

BDP16a_src\data_handling_tools

Thank you!

[Author]

Posts