Is there an automated way to generate either a wordcloud or at the very least a list of all symbols used in all math environments in a LaTeX document?
I'd like to generate a symbol-only wordcloud, and I found Wordle, and a semi-automatic way to get it directly into a TeX document, but not how to only include math in the wordcloud, let alone that subscripts would be kept intact. I also found this externalization to R, which seems to be great (including choosing the font for the result), although I'm not sure how it would handle math or math-only...
Is there any way to generate this without copy-pasting each equation into the Wordle input form and hope I don't run out of input size?