Assorted docstring fixes

doc/demos/animation/animation.rst

@@ -208,7 +208,7 @@ file, so we can encode the animation with the `WebM format
 
 .. code-block:: bash
 
-   $ mencoder mf://frames/bfs*.png -mf w=500:h=400:type=png -ovc raw -of rawvideo -vf format=i420 -nosound -o bfs.yuy
+   $ mencoder mf://frames/bfs*.png -mf w=type=png -ovc raw -of rawvideo -vf format=i420,scale=500:400 -nosound -o bfs.yuy
    $ vpxenc bfs.yuy -o bfs.webm -w 500 -h 400 --fps=5/1 --target-bitrate=5000 --good --threads=4
 
 
@@ -216,7 +216,7 @@ file, so we can encode the animation with the `WebM format
    :hide:
 
    >>> import subprocess
-   >>> subprocess.call("mencoder mf://frames/bfs*.png -mf w=500:h=400:type=png -ovc raw -of rawvideo -vf format=i420 -nosound -o demos/animation/bfs.yuy".split())
+   >>> subprocess.call("mencoder mf://frames/bfs*.png -mf type=png -ovc raw -of rawvideo -vf format=i420,scale=500:400 -nosound -o demos/animation/bfs.yuy".split())
    0
    >>> subprocess.call("vpxenc demos/animation/bfs.yuy -o demos/animation/bfs.webm -w 500 -h 400 --fps=5/1 --target-bitrate=2000 --good --threads=4".split())
    0

doc/demos/animation/animation_zombies.py

@@ -77,6 +77,8 @@ if not offscreen:
                       vertex_anchor=0,
                       edge_color=[0.6, 0.6, 0.6, 1],
                       edge_sloppy=True,
+                      vertex_color=[1.,1.,1.,0.],
+                      vertex_fill_color=[1.,1.,1.,0.],
                       vertex_surface=vertex_sfcs,
                       vertex_halo=newly_infected,
                       vertex_halo_size=1.2,
@@ -90,12 +92,13 @@ else:
                             vertex_anchor=0,
                             edge_sloppy=True,
                             edge_color=[0.6, 0.6, 0.6, 1],
+                            vertex_color=[1.,1.,1.,0.],
+                            vertex_fill_color=[1.,1.,1.,0.],
                             vertex_surface=vertex_sfcs,
                             vertex_halo=newly_infected,
                             vertex_halo_color=[0.8, 0, 0, 0.6])
     win.add(win.graph)
 
-
 # This function will be called repeatedly by the GTK+ main loop, and we use it
 # to update the state according to the SIRS dynamics.
 def update_state():