Fix DCMStack output

CHANGES

@@ -1,6 +1,12 @@
 Next release
 ============
 
+* FIX: Enable absolute path definitions in DCMStack (https://github.com/nipy/nipype/pull/1089)
+* ENH: New algorithm: mesh.WarpPoints applies displacements fields to point sets.
+* ENH: Improved FieldMap-Based (FMB) workflow for correction of susceptibility distortions
+       in EPI seqs. (https://github.com/nipy/nipype/pull/1019)
+* ENH: Added interface to simulate DWIs using the multi-tensor model
+       (https://github.com/nipy/nipype/pull/1085)
 * ENH: New mesh.MeshWarpMaths to operate on surface-defined warpings
        (https://github.com/nipy/nipype/pull/1016)
 * FIX: Refactor P2PDistance, change name to ComputeMeshWarp, add regression tests,

nipype/interfaces/dcmstack.py

@@ -42,12 +42,15 @@ def sanitize_path_comp(path_comp):
             result.append(char)
     return ''.join(result)
 
+
 class NiftiGeneratorBaseInputSpec(TraitedSpec):
     out_format = traits.Str(desc="String which can be formatted with "
                             "meta data to create the output filename(s)")
-    out_ext = traits.Str('.nii.gz',
-                         usedefault=True,
+    out_ext = traits.Str('.nii.gz', usedefault=True,
                          desc="Determines output file type")
+    use_cwd = traits.Bool(True, usedefault=True,
+                          desc='use interface\'s current working directory')
+
 
 class NiftiGeneratorBase(BaseInterface):
     '''Base class for interfaces that produce Nifti files, potentially with
@@ -73,7 +76,12 @@ def _get_out_path(self, meta, idx=None):
             out_fmt = '-'.join(out_fmt)
         out_fn = (out_fmt % meta) + self.inputs.out_ext
         out_fn = sanitize_path_comp(out_fn)
-        return path.join(os.getcwd(), out_fn)
+
+        if self.inputs.use_cwd:
+            return path.join(os.getcwd(), out_fn)
+        else:
+            return path.abspath(out_fn)
+
 
 class DcmStackInputSpec(NiftiGeneratorBaseInputSpec):
     dicom_files = traits.Either(InputMultiPath(File(exists=True)),

nipype/interfaces/tests/test_auto_DcmStack.py

@@ -13,6 +13,8 @@ def test_DcmStack_inputs():
     out_ext=dict(usedefault=True,
     ),
     out_format=dict(),
+    use_cwd=dict(usedefault=True,
+    ),
     )
     inputs = DcmStack.input_spec()
 

nipype/interfaces/tests/test_auto_GroupAndStack.py

@@ -13,6 +13,8 @@ def test_GroupAndStack_inputs():
     out_ext=dict(usedefault=True,
     ),
     out_format=dict(),
+    use_cwd=dict(usedefault=True,
+    ),
     )
     inputs = GroupAndStack.input_spec()
 

nipype/interfaces/tests/test_auto_MergeNifti.py

@@ -10,6 +10,8 @@ def test_MergeNifti_inputs():
     ),
     out_format=dict(),
     sort_order=dict(),
+    use_cwd=dict(usedefault=True,
+    ),
     )
     inputs = MergeNifti.input_spec()
 

nipype/interfaces/tests/test_auto_SplitNifti.py

@@ -9,6 +9,8 @@ def test_SplitNifti_inputs():
     ),
     out_format=dict(),
     split_dim=dict(),
+    use_cwd=dict(usedefault=True,
+    ),
     )
     inputs = SplitNifti.input_spec()