Update nitransforms/nonlinear.py

Co-Authored-By: Mathias Goncalves <[email protected]>

Author: oesteban

nitransforms/nonlinear.py

@@ -89,7 +89,7 @@ def map(self, x, inverse=False, index=0):
         if np.any(np.abs(ijk - indexes) > 0.05):
             print('Some coordinates are off-grid of the displacements field.',
                   file=sys.stderr)
-        indexes = tuple([tuple(i) for i in indexes.T])
+        indexes = tuple(tuple(i) for i in indexes.T)
         return x + self._field[indexes]