On 2013-02-14 16:19+0800 Joseph Wang wrote: > FYI, > > I just submitted a patch to the SVG driver on the sourceforge project > page. The patch > moves some of the transforms into the text element itself and it cuts > down the size > of the SVG by 50% in some of my test cases. What happens is that the SVG > driver > uses text to plots out hershey fonts, so you have data heavy plots in > which each point > is a massive bit of XML.
Hi Joseph: Thanks for your patch, but before looking at it in any detail I would appreciate some clarification of the explanation you made above about the reduction in size of the resulting SVG. I haven't looked at the svg code in a while, but I am virtually positive it does not use Hershey fonts. For example, I just took a quick look at some -dev svg results, and it appears that by default it is using generic fonts, i.e., sans-serif, serif, etc., rather that specific font choices. So specific font choice becomes (by design) the responsibility of the svg viewer, and has nothing to do with PLplot and especially our old-fashioned Hershey fonts. If it turns out I am wrong, and there are cases where it is possible for -dev svg to use Hershey fonts, I think that is a bug that should be fixed. If I am right, then there must be some other explanation of why you have been able to achieve reductions in svg result sizes by a factor of two in some cases with your patch. That's obviously an outstanding result that I think we should incorporate, but it would be good to get a clear explanation as to why your patch reduces result size so much. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ Plplot-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/plplot-general
