Thanks for confirming this, Alan! On Mar 10, 2010, at 8:09 , Alan W. Irwin wrote:
> -dev qtwidget does not have this problem, and neither does -dev > svg. (For > the latter, you must use the familying option -fam which will > generate two > files corresponding to the two pages.) I don't know how qtwidget does it's plots, so I can't comment on that, but for svg, I think the fact that the second plot comes out OK is not so conclusive. The pdfcairo driver also produces a two page output file. Page 2 of that file looks OK, too, but it is a separate page after all. I'm not really sure how to interpret alpha for the background of a GUI window. What's behind the background to see through too? For graphics files (e.g. .png or .svg) they might be overlaid on something else so background transparency there is more intuitive. Perhaps if the background is non-opaque, GUIs could draw an opaque checkerboard "backbackground" (like the gimp does) before drawing the non-opaque background? Or maybe the GUI widgets being rendered into have their own alpha channel and could therefore be layered in a way that would give the background's alpha channel an obvious meaning? In this case, the GUI widget would need to be "cleared" before drawing the non-opaque background of a subsequent plot. Dave ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
