<div dir="ltr">Thanks! <br></div><div class="gmail_extra"><br><div class="gmail_quote">2017-06-27 18:12 GMT+01:00 Philip A Cook <span dir="ltr"><<a href="mailto:cookpa@mail.med.upenn.edu" target="_blank">cookpa@mail.med.upenn.edu</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Yes, you can use fslmerge to combine the vector components.<br>
<br>
When translating image formats / moving between software, there's potential problems with differences in image orientation conventions. So be careful that your scalar images are not flipped left / right and that the vectors are correctly oriented. The most common problem is a difference in principal axes, eg (x,y,z) in one software is (x,y,-z) in the other. If this is the case, you can use fslmaths to fix the component images before merging.<br>
<div class="HOEnZb"><div class="h5"><br>
> On Jun 27, 2017, at 12:36 PM, Ana Fouto <<a href="mailto:a.fouto@CAMPUS.FCT.UNL.PT">a.fouto@CAMPUS.FCT.UNL.PT</a>> wrote:<br>
><br>
> Thanks!<br>
><br>
> I used the following code:<br>
><br>
> cat restore_fit.bdouble | dteig | voxel2image -components 12 -outputroot dteig -header original_data.nii.gz<br>
><br>
> I guess it worked because I got 12 outputs. But I have another question, the eigenvectors came in components is it possible to join them in only one vector? So I can also overlay with the ones I got from FSL dtifit.<br>
><br>
> Best regards,<br>
> Ana Fouto<br>
><br>
> 2017-06-27 16:55 GMT+01:00 Philip A Cook <<a href="mailto:cookpa@mail.med.upenn.edu">cookpa@mail.med.upenn.edu</a>>:<br>
> You can use voxel2image to convert the dteig output to NIFTI images. The principal eigenvalue will be the first component of the output.<br>
><br>
> <a href="http://camino.cs.ucl.ac.uk/index.php?n=Main.Fileformats#toc10" rel="noreferrer" target="_blank">http://camino.cs.ucl.ac.uk/<wbr>index.php?n=Main.Fileformats#<wbr>toc10</a><br>
><br>
> > On Jun 27, 2017, at 7:00 AM, Ana Fouto <<a href="mailto:a.fouto@CAMPUS.FCT.UNL.PT">a.fouto@CAMPUS.FCT.UNL.PT</a>> wrote:<br>
> ><br>
> > Dear all,<br>
> ><br>
> > I'm testing the tensor fitting with RESTORE method and I would to know if is there way to extract the principal eigenvalue so I could compare this fitting method with the traditional fitting performed by FSL dtifit. The purpose of doing this is because I want to load both in fslview and see the difference by visual inspection.<br>
> ><br>
> > Thanks in advance for the help.<br>
> ><br>
> > Best regards,<br>
> > Ana Fouto<br>
> > ______________________________<wbr>_________________<br>
> > Camino-users mailing list<br>
> > <a href="mailto:Camino-users@www.nitrc.org">Camino-users@www.nitrc.org</a><br>
> > <a href="http://www.nitrc.org/mailman/listinfo/camino-users" rel="noreferrer" target="_blank">http://www.nitrc.org/mailman/<wbr>listinfo/camino-users</a><br>
><br>
><br>
<br>
</div></div></blockquote></div><br></div>