add xyz scale to AFNI refit

Author: salma1601

nipype/interfaces/afni/tests/test_auto_Refit.py

@@ -42,6 +42,8 @@ def test_Refit_inputs():
     ),
     xorigin=dict(argstr='-xorigin %s',
     ),
+    xyzscale=dict(argstr='-xyzscale %f',
+    ),
     ydel=dict(argstr='-ydel %f',
     ),
     yorigin=dict(argstr='-yorigin %s',

nipype/interfaces/afni/utils.py

@@ -1821,6 +1821,9 @@ class RefitInputSpec(CommandLineInputSpec):
     zdel = traits.Float(
         desc='new z voxel dimension in mm',
         argstr='-zdel %f')
+    xyzscale = traits.Float(
+        desc='Scale the size of the dataset voxels by the given factor',
+        argstr='-xyzscale %f')
     space = traits.Enum(
         'TLRC', 'MNI', 'ORIG',
         argstr='-space %s',