Add post-6.0 mris_expand -intensity option

Author: effigies

nipype/interfaces/freesurfer/tests/test_auto_MRIsExpand.py

@@ -37,6 +37,8 @@ def test_MRIsExpand_inputs():
     spring=dict(argstr='-S %g',
     ),
     subjects_dir=dict(),
+    target_intensity=dict(argstr='-intensity %g %s',
+    ),
     terminal_output=dict(nohash=True,
     ),
     thickness=dict(argstr='-thickness',

nipype/interfaces/freesurfer/utils.py

@@ -2923,6 +2923,12 @@ class MRIsExpandInputSpec(FSTraitedSpec):
     nsurfaces = traits.Int(
         argstr='-N %d',
         desc='Number of surfacces to write during expansion')
+    # Requires dev version
+    # https://github.com/freesurfer/freesurfer/blob/9730cb9/mris_expand/mris_expand.c
+    target_intensity = traits.Tuple(
+        traits.Float, traits.File(exists=True),
+        argstr='-intensity %g %s',
+        desc='Tuple of intensity and brain volume to crop to target intensity')
 
 
 class MRIsExpandOutputSpec(TraitedSpec):