latex output to .txt format

Hi,

I transfered some equations into latex and want to save the output as .txt format, can anyone tell me how can I do it?

thanks,

Answer 1

[Daniel Pusicha]

As Yongjian Feng suggested, the expression can be written to a .txt file using the fprint function. First we have to create a LaTeX character array from a symbolic expression:

syms test
formula = latex(test); % This produces the output '\mathrm{test}'

LaTeX expressions in general contain commands which are denoted by a backslash. However, the function that is used to write strings to .txt file uses the backslah for formatting. Replacing the backslash with a double backslash solves this problem:

formula = strrep(formula, '\', '\\');

Finally, the character array can be written to the file:

fid = fopen('test_file.txt','wt');
fprintf(fid, formula);
fclose(fid);

Answer 2

[Yongjian Feng]

So you convert some equations into latex as a string, right? Then you can just follow this to write the string into a .txt file:

https://www.mathworks.com/matlabcentral/answers/110573-write-string-in-text-file

[Daniel Pusicha]

I think there is at least one further step necessary as the latex expression will certainly contain some backslashes however fprintf() interprets a backslash as some formatting command.

syms test
formula = latex(test); % This produces the output '\mathrm{test}'
fid = fopen('test_file.txt','wt');
fprintf(fid, formula);

Warning: Escaped character '\m' is not valid. See 'doc sprintf' for supported special characters.