I am using TeX studio and I am using the
dvi-->ps-->pdf so that the
\psfrag substitutions occur on my
.eps figures. But they replace only some of the texts. For example, if I want to replace
$O_1$, it does not work. Instead if I type 'oaaa' in place of
O1 only then it works. This gets annoying as I have a lot of replacements to do and it would be a waste of time to keep trying until the substitutions occur. I searched a lot for this error in vain. Can anybody please help me with it?