CHG: Matlab >Python. Add "plot_none.py" for supporting to plot "none" in plotmodel.

src/m/plot/plot_manager.py

@@ -18,6 +18,7 @@
 from processmesh import processmesh
 from plot_gridded import plot_gridded
 from plot_landsat import plot_landsat
+from plot_none import plot_none
 
 
 def plot_manager(md, options, fig, axgrid, gridindex):
@@ -77,9 +78,11 @@ def plot_manager(md, options, fig, axgrid, gridindex):
             plot_vertexnumbering(md, options, fig, axgrid, gridindex)
             return
         elif data == 'none':
-            print('no data provided to plot (TODO: write plot_none.py)')
-            applyoptions(md, [], options, fig, axgrid, gridindex)
-            return
+            #print('no data provided to plot (TODO: write plot_none.py)')
+            #applyoptions(md, [], options, fig, axgrid, gridindex)
+            if not options.exist('overlay'):
+                plot_none(md, options, fig, axgrid, gridindex)
+                return
         else:
             print(("WARNING: '%s' is not implemented or is not a valid string for option 'data'" % data))
     # }}}

src/m/plot/plot_none.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+import matplotlib.pyplot as plt
+
+def plot_none(md, options, fig, axgrid, gridindex):
+    '''
+    PLOT_NONE - plot nothing, just apply options
+
+    Usage:
+        plot_none(md,options,fig,axgrid,gridindex)
+
+    See also: ??
+    '''
+    return
+
+    options=options.addfielddefault('colorbar','none')
+    options=options.addfielddefault('map','none')
+    #FIXME: What do you mean 'axis" in matlab? Check 'axis' option in python.
+    #options=options.addfielddefault('axis','equal')
+
+    #TODO: overlay option in "plot_none.m"
+
+    #apply options
+    applyoptions(md,[],options);