Fix plotting code bugs

[RaghuSpaceRajan]

No description provided.

[codecov]

Codecov Report

Merging #12 (7b3d64f) into master (664e0ec) will increase coverage by 0.01%.
The diff coverage is 11.76%.

@@            Coverage Diff             @@
##           master      #12      +/-   ##
==========================================
+ Coverage   68.82%   68.83%   +0.01%     
==========================================
  Files          30       30              
  Lines        3727     3729       +2     
==========================================
+ Hits         2565     2567       +2     
  Misses       1162     1162              

Flag	Coverage Δ
unittests	68.83% <11.76%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
mdp_playground/analysis/analysis.py	26.94% <11.76%> (+0.33%)	⬆️

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