Plotting a custom reinforcement learning environment template

Question

Arjun Tyagi 2022-2-15

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https://ww2.mathworks.cn/matlabcentral/answers/1650330-plotting-a-custom-reinforcement-learning-environment-template

回答： Akshat 2024-1-12

Hi there,

I am trying to create a custom Reinforcement Learning environment similar to the CartPole-Discrete in RL toolbox, except for a few tweaks to parameters like maximum force, threshold angle, etc.

I type

rlCreateEnvTemplate("CartPole_Environment")

and changed the value of MaxForce to 20 (supposedly). I then saved the file with the same name CartPole_Environment.

Now when I type the following comands in the command window, I am not getting the plot of the environment as I did with CartPole-Discrete.

env = CartPole_Environment;
validateEnvironment(env);
plot(env);

I would really be grateful if someone could help me with this!

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Answer 1

Akshat 2024-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/1650330-plotting-a-custom-reinforcement-learning-environment-template#answer_1388431

在 MATLAB Online 中打开

Hi Arjun,

I understand you want to plot the "CartPole_Environment" that you have modified at your end.

As per what I see in the code file when I create the template file using the following command,

rlCreateEnvTemplate("CartPole_Environment");

in the file generated, the "plot" method looks something like this:

% (optional) Visualization method
function plot(this)
    % Initiate the visualization
    
    % Update the visualization
    envUpdatedCallback(this)
end

As you can see, it states that you will need to specify what exactly you want to plot. So I would suggest trying out filling this plot method with whatever it is you want to visualise, if the problem still persists, feel free to reach out here with the error/issue you are facing.

Hope this helps!