On 2010-10-05 15:18-0700 Alan W. Irwin wrote: > Note also these Greek-letter variations are all available in the same > font. So it is not a matter of suddenly changing fonts in the middle > of a string. Instead, it is using the same font with different Hershey > and therefore UCS4 indices representing different variant forms of > Greek letters depending upon what the user wants to do.
Hi Steve: Having slept on this, the lesson I take away from this is I should always mention any changes in the Hershey to unicode transformation table and the implications of that in the release notes. But hopefully I have nailed it now and there will be no more such changes. Furthermore, I think your best workaround is not to fiddle with the Hershey to unicode transformation yourself (since that implies you would have to patch PLplot indefinitely), and instead let your users know there have been some changes in the Hershey to unicode transformation table, and they should look at example 7 results at http://plplot.sourceforge.net/examples.php?demo=07 (which is the cairo result) or run example 7 with -dev qtwidget for themselves for guidance about which Hershey indices to use. I have also thought a bit more about the planned plglyph argument list, and I have decided the last argument should be a text string like that used in plptex rather than a UCS4 index. IOW, plglyph would be a simple wrapper for repeat calls to plptex for each element of the x and y arrays. The advantage of this approach is it gives the user great flexibility in specifying the glyph and font following all the many different methods in http://plplot.sourceforge.net/docbook-manual/plplot-html-5.9.7/characters.html. It also allows the user to specify more than one glyph in the string to be plotted at each of the x, y points if they wanted that, but that would be an extremely unusual use case. Because of this proposed change in the argument list, the planned plglyph should make accessible all the glyphs available from plpoin (except for the special code=-1 point "glyph" which I doubt is used very much because it might be problematic for some devices and because our DocBook documentation does not mention this capability), all the glyphs available from plsym, and all the huge number of glyphs (a million of them?) that gucharmap shows are available on your system. 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); PLplot scientific plotting software package (plplot.org); 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 __________________________ ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
