[AstroPy] pyregion : python parser for ds9 region files

Michael Droettboom mdroe@stsci....
Tue Oct 20 10:31:45 CDT 2009


Jae-Joon Lee wrote:
> The parser seems to be rather slow (likely due to my lack of parser
> design skill), but I currently don't have any further plan to improve
> its performance. So, any contribution will be welcomed.
>   
The pyparsing-based TeX parser in matplotlib's mathtext is also rather 
suboptimal.  But I found adding

from pyparsing import *
ParserElement.enablePackrat()


made a considerable difference.  I believe this caches sub-results as it 
goes.  Have you played with that?

Mike

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA



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