Sometimes the problem stems from chronic exposure to user interfaces. Yesterday I prepared some material for a Mac user's presentation and said,
"This text file tells you the names of the files you need for the presentation" the response was, "Can I click on it?" I deleted all the files in the directory apart from the necessary ones and crossed my fingers. Jim On Fri, Sep 2, 2016 at 1:50 AM, Sarah Goslee <sarah.gos...@gmail.com> wrote: > R already contains platform-independent code to open a graphics > device: dev.new() > The device thus created is specified in options(), but by default is > appropriate for the current platform. > > It's good practice to use this function instead of calling quartz() > directly so that your code can be run on other systems. > > Sarah > > On Thu, Sep 1, 2016 at 11:34 AM, Franklin Bretschneider > <brets...@xs4all.nl> wrote: >> Dear Tom Mosca, >> >> Re: >> >>> Using a PC I have written the R code for my elementary statistics students. >>> One of the students has a Mac. Should the same lines of code work on a >>> Mac? >>> >>> >>> >>> Where can the student find support for R on her Mac? I don't know anything >>> about them, and have never used one. >>> >> >> >> Some commands are platform-dependent though, such as opening the standard >> graphics window [quartz() vs windows()]. >> This needn't be a problem, since in R a script can sense on which platform >> it is running. >> Some years ago I wrote a platform-sensing graphics routine, reproduced below. >> This might help to prevent problems with simple graphics demos, and can no >> doubt be extended to other commands. >> >> Success, and >> Best regards, >> >> >> Franklin Bretschneider >> Dept of Biology >> Utrecht University >> brets...@xs4all.nl >> >> >> >> >> # function PIgraph.r >> # Platform-Independent graphics init >> # determines platform (Windows or Mac) then chooses device type >> # F. Bretschneider; 04-08-2009 >> # ==================== >> >> PIgraph <- function(w,h) if(.Platform$OS.type == "windows") windows(w=w, >> h=h) else quartz(w=w, h=h) >> >> # example application >> x=-3:3 >> y=x^2 >> PIgraph(8,6) >> plot(x,y, type = 'o') >> >> ______________________________________________ >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > > -- > Sarah Goslee > http://www.stringpage.com > http://www.sarahgoslee.com > http://www.functionaldiversity.org > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
