How can I convert the style of an equation in Matlab?
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I have an equation represents the output of a data mining technique and the equation can not be understand by Matlab calculations as contains curly brackets, for example likes this:
'+150575023162.5103{Ey}^{}+3697.1458\frac{{Ex}^{}{Ey}^{}}{{}^{0.5}}+1.5498e-007'
I am using (strrep function) in Matlab to be used in further calculations, but this is not as practical way. Is there an efficient way for this? Many thanks
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Walter Roberson
2015-6-5
LaTeX is a Turing Complete language. Parsing it to figure out what it means is the same as executing it. I don't think anyone has written a MATLAB implementation of LaTeX.
If you were able to define a specific subset of LaTeX and functions or objects to be created for each subset, then it might be practical to use regexp 'tokens' to do the parsing. But it wouldn't be simple; see http://www.mathworks.com/matlabcentral/answers/121920-how-do-i-match-nested-parenthesis-brackets-or-braces-with-dynamic-regular-expressions for the difficulty in bracket matching.
My first preference in a matter such as this would be to go back to the program that output the LaTeX and alter it to output MATLAB instead. If that were not possible then I would switch to other tools such as using Yacc and Lex to do the parsing, possibly emitting MATLAB. If the subset of LaTeX used was very simple then I might do it all in MATLAB as a series of parsing routines.
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