fix transpose to work when not defined by caller

plotter/Plotter.py

@@ -98,6 +98,9 @@ class Plotter:
             for p in self.file_data:
                 p.process_file(self.ndim, self.var, self.mval)
             self.fig_count = len(self.var)
+
+            if self.transpose == None:
+                self.transpose = [False for _ in self.var]
     
     def __plot(self):
         os.system("mkdir -p " + self.out)