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MDP Policy Plot for a Maze

user1066
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user1066 Published in April 26, 2018, 5:38 am

I have a 5x-5 maze specified as follows.

r = [1  0   1   1   1
     1  1   1   0   1
     0  1   0   0   1
     1  1   1   0   1
     1  0   1   0   1];

Where 1's are the paths and 0's are the walls.

Assume I have a function foo(policy_vector, r) that maps the elements of the policy vector to the elements in r. For example 1=UP, 2=Right, 3=Down, 4=Left. The MDP is set up such that the wall states are never realized so policies for those states are ignored in the plot.

policy_vector' = [3 2 2 2 3 2 2 1 2 3 1 1 1 2 3 2 1 4 2 3 1 1 1 2 2]
symbols' = [v > > > v > > ^ > v ^ ^ ^ > v > ^ < > v ^ ^ ^ > >]

I am trying to display my policy decision for a Markov Decision Process in the context of solving a maze. How would I plot something that looks like this? Matlab is preferable but Python is fine.

Even if some body could show me how to make a plot like this I would be able to figure it out from there.

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