Ken, thanks for the report. The issue is really puzzling, because the line specification code has not changed since previous R versions (which work as expected) and I cannot reproduce it in any test applications (i.e. if I take the current Quartz code and run it outside R it works as expected). At any rate I'm continuing to investigate it and keep you posted. Thanks, Simon
On May 29, 2008, at 9:17 AM, Kenneth Knoblauch wrote:
There was some discussion about slowdowns in the new quartz device a few weeks ago that had to do with line drawing but I don't think that the following has been mentioned. I've noticed a "new" behavior in the quartz device that can be seen by running xx <- seq(1:100) plot(xx, xx^2, type = "l", lty = 2) On my display, the dash spacing disappears for xx < 40 for the default window size. In addition, the dashes are obliterated by increasing the line width, lines(xx, 0.5 * xx^2, lty = 2, lwd = 2) unless I enlarge the window. The same occurs for lty = 3. The dash spacing seems to depend on the slope of the contour. plot(rep(1, 100), lty = 2, type = "l", ylim = c(0, 100)) lines(xx, lty = 2) lines(2 * xx, lty = 2) This did not occur in an earlier version of R that I tried (R 2.2.0) and does not occur in other graphic devices that I have tried (x11 and pdf, so far). sessionInfo() R version 2.7.0 Patched (2008-05-28 r45808) i386-apple-darwin8.10.1 locale: en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base Does anyone else see this? Apologies in advance if this is normal behavior. Thank you. best, Ken -- Ken Knoblauch Inserm U846 Institut Cellule Souche et Cerveau D?partement Neurosciences Int?gratives 18 avenue du Doyen L?pine 69500 Bron France tel: +33 (0)4 72 91 34 77 fax: +33 (0)4 72 91 34 61 portable: +33 (0)6 84 10 64 10 http://www.sbri.fr
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