Make Inkscape PostScript files compatible with psfrag in LaTeX

eps files exported with Inkscape cannot be used with psfrag.

Open your PostScript file with "psfragcompatible"
The function searches the PostScript file for strings of the form <01020304>Tj or [<010203>-1<0405>-1<06>-1<07>1<08>129<090a06>]TJ and replaces them by strings of the form (int)Tj, where int is a number 1,2,3, ...
Finally you can use \psfrag{int}{your latex expression} in LaTeX.

This function is a modification of the function "replaceinfile" written by Pekka Kumpulainen.

The workaround is explained on http://tavmjong.free.fr/INKSCAPE/MANUAL/html/File-Export.html