[pstricks] externalize pdf images with pstricks

[mathias legrand]

Hi,

I'm planning to work on a Latex document with figures based on numerical 
simulations, mostly. I want to use pstricks but figure by figure only to 
get the respective pdf to be included in the main document (the latter 
being compiled by pdflatex). What I'd like to have is a folder with one 
pstricks tex file for each figure and a main tex document defining the 
pstricks parameters like color, with thickness and everything related to 
the figures. This main figure document would include 
\include{figures.tex} commands so that compiling selected figures could 
be possible. At the end of the compilation of this file, I should have a 
list of pdf files such as figure1.pdf, figure2.pdf.... correctly 
cropped. Is there somewhere a piece of code that does this job?

Thank you