Fix parsing of ortvec

Author: mvdoc

nipype/interfaces/afni/model.py

@@ -148,7 +148,7 @@ class DeconvolveInputSpec(AFNICommandInputSpec):
         desc='this option lets you input a rectangular array of 1 or more '
              'baseline vectors from a file. This method is a fast way to '
              'include a lot of baseline regressors in one step. ',
-        argstr='ortvec %s')
+        argstr='-ortvec %s %s')
     x1D = File(
         desc='specify name for saved X matrix',
         argstr='-x1D %s')