It looks like mris_transform interface changed since Freesurfer 5.3.

In Freesurfer 7.4.1, I believe you need to specify both --trx-src <> and --trx-dst <> if you are giving mris_transform the transform in xfm format. Or, you can use lta_convert to convert xfm to lta.

Best,

Yujing

From: freesurfer-bounces@nmr.mgh.harvard.edu freesurfer-bounces@nmr.mgh.harvard.edu On Behalf Of Noemí Hostalet Sent: Tuesday, April 16, 2024 7:13 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Error using mris_transform in Freesurfer 7.4.1

External Email - Use Caution Hi,

I'm trying to run the following mris_transform command in Freesurfer version 7.4.1:

mris_transform group1/z/Freesurfer/surf/lh.smoothwm group1/z/Freesurfer/mri/transforms/talairach.xfm group1/z/Freesurfer/surf/tal/lh.smoothwm.tal.asc

But it's giving the following error:

The transform does not have the valid src volume info. Either you specify it with --trx-src or make the transform to have the valid src info.

In a previous version (Freesurfer 5.3) it ran without problems.

Do you know what could be the problem?

Thank you

-- Noemí