ripley@stats.ox.ac.uk
2002-Mar-16 18:12 UTC
[Rd] X11(colortype="true") does not give a truecolor visual (PR#1388)
On Sat, 16 Mar 2002 Edwin@balpol.tudelft.nl wrote:> Full_Name: Edwin > Version: 1.4.1 > OS: SunOS/Solaris > Submission from: (NULL) (130.161.1.115) > > > When selecting an X11 visual on Solaris 2.7 with > > X11(colortype="true") > > a PseudoColor visual is actually created. (verified with xwininfo)Note that the help page does *not* say that this `selects a visual'. It says it selects a `color model'. One can use a model which differs from the X11 visual class, but the default class and depth are always used. This seems to be a misunderstanding of the `colortype' argument: there is no argument to select a visual class.> The system in question (like many UNIX workstations) has both Pseudo and > truecolor visual types available, however the default type points to an 8 plane > PseudoColor visual.I believe that is unusual. Sun Xservers allow you to set the default visual on the command line: has the default been overridden? Ours with multiple visuals are selecting TrueColor, but it does say the default is hardware-dependent.> Some applications look for the truecolor visual (netscape, acroread) and use it > when available. For others it needs to be explicitely requested (VNC viewer). R > seems to do neither and just goes with the default, even if a truecolor type is > requested.As it does not say it will do anything else, this is not strictly a bug. It needs someone with the problem to contribute an enhancement, perhaps additional arguments to select the visual class and depth? -- Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Thomas Lumley
2002-Mar-16 21:06 UTC
[Rd] X11(colortype="true") does not give a truecolor visual (PR#1388)
On Sat, 16 Mar 2002 ripley@stats.ox.ac.uk wrote:> On Sat, 16 Mar 2002 Edwin@balpol.tudelft.nl wrote: > > > > The system in question (like many UNIX workstations) has both Pseudo and > > truecolor visual types available, however the default type points to an 8 plane > > PseudoColor visual. > > I believe that is unusual. Sun Xservers allow you to set the default > visual on the command line: has the default been overridden? Ours with > multiple visuals are selecting TrueColor, but it does say the default is > hardware-dependent. >As another data point: The Sun workstation that I had a couple of years ago had this setup as well, and I'm fairly sure that the defaults hadn't been overridden, but I seem to remember that I raised this issue back then and no-one else reported a similar problem. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._