I cannot include the latex command \bar{} into my figure or legend

I cannot include the latex command \bar{} into my figure or legend

Answer 1

[Walter Roberson]

http://uk.mathworks.com/matlabcentral/answers/232055-is-there-a-hook-that-will-allow-me-to-change-the-document-style-and-or-add-packages-to-the-latex-fil#answer_187995