Octave coding convention

[Rik]

12/16/14

Juan,

One change I would make to your patch is to follow the Octave coding
convention of having parentheses around the condition being tested in an if
clause.

+          if dx < 1
+            dx       = 0.5;
+            x_origin = 0.75;
+          endif

=>

+          if (dx < 1)
+            dx       = 0.5;
+            x_origin = 0.75;
+          endif

Otherwise it looks fine.

--Rik