FIX: Tell nitransforms to load as FSL if not LTA

nipreps · Nov 17, 2023 · 64922c7 · 64922c7
1 parent 2c2b8e3
commit 64922c7
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/fmriprep/workflows/bold/registration.py b/fmriprep/workflows/bold/registration.py
@@ -678,7 +678,10 @@ def compare_xforms(xfm_list, reference=None, moving=None, norm_threshold=15):
     ref = nb.load(reference) if reference else None
     mov = nb.load(moving) if moving else None
 
-    bbr_affine = nt.linear.load(xfm_list[0], reference=ref, moving=mov).matrix
+    bbr_fname = xfm_list[0]
+    bbr_fmt = 'lta' if bbr_fname.endswith('.lta') else 'fsl'
+
+    bbr_affine = nt.linear.load(bbr_fname, fmt=bbr_fmt, reference=ref, moving=mov).matrix
     fallback_affine = nt.linear.load(xfm_list[1], reference=ref, moving=mov).matrix
 
     norm, _ = _calc_norm_affine([fallback_affine, bbr_affine], use_differences=True)