[R] R demos

[Liaw, Andy]

> From: Jim Brennan
> 
> OK, actually this is a textbook example of why it should be 
> done as you said
> as I just add on the packages I want in Rprofile.site and 
> that way don't
> screw up the default by cutting and pasting into Rprofile.
> 
> So I have restored Rprofile to default and added 
> Rprofile.site as follows to
> etc directory.
> 
> local({
>        old <- getOption("defaultPackages")
>        options(defaultPackages = c(old, "MASS","gtools","gregmisc"))
>      })
> 
> I think this is what you meant!
> 
> As for running R --vanilla  I don't know how to do that.
> Is it possible with a windows version.?

Absolutely.  If you use Rgui, right-click on the Rgui icon and click on
"Properties".  In the "target" field, add "--vanilla" (or any command line
argument to R).  If the command is quoted, make sure you add the option
outside the quotes.

Andy


> Anyway it is working and thanks for the help.
>  
> -----Original Message-----
> From: Prof Brian Ripley [mailto:ripley at stats.ox.ac.uk] 
> Sent: June 24, 2005 12:22 PM
> To: Jim Brennan
> Cc: 'Douglas Bates'; 'r-help'
> Subject: Re: [R] R demos
> 
> On Fri, 24 Jun 2005, Jim Brennan wrote:
> 
> > Thanks!
> > I realized the datasets were not available, but not that 
> they were in a
> > separate package. I have never had to load this package in previous
> versions
> > and assumed they were part of one of the default main packages.
> 
> They are!  datasets *is* `one of the default main packages'.
> 
> > An easy fix was to adjust my default packages in the 
> Rprofile file to
> > include "datasets"
> > This is for those who don't know a file in the etc directory.
> 
> Not really: you should be using Rprofile.site: see ?Startup.
> 
> > options(defaultPackages=c("utils"  ,"datasets",  "graphics" 
> ,"stats",
> > "methods", "MASS", "gtools"))
> >
> > Not sure how this happened as I never had to do this before.
> 
> The default is actually
> 
> c("datasets", "utils", "grDevices", "graphics", "stats", "methods")
> 
> so you have changed it. What happens if you start R 
> --vanilla?  That might 
> help track down what you did.
> 
> >
> > -----Original Message-----
> > From: Douglas Bates [mailto:dmbates at gmail.com]
> > Sent: June 24, 2005 11:25 AM
> > To: Jim Brennan
> > Cc: r-help
> > Subject: Re: [R] R demos
> >
> > On 6/24/05, Jim Brennan <jfbrennan at rogers.com> wrote:
> >> I have noticed that some data sets seem not to be 
> available to me when I
> > am
> >> running some of the examples or demos since I have changed 
> versions. For
> >> example:
> >> demo(persp)
> >>
> >>
> >>         demo(persp)
> >>         ---- ~~~~~
> >>
> >> Type  <Return>   to start :
> >>
> >> R>if (dev.cur() <= 1) get(getOption("device"))()
> >>
> >> R>is.dev.interactive <- .Device %in% c("X11", "GTK",
> >>     "gnome", "quartz", "windows", "JavaGD")
> >>
> >> R>op <- par(ask = is.dev.interactive)
> >>
> >> R>x <- seq(-10, 10, length = 50)
> >>
> >> R>y <- x
> >>
> >> R>rotsinc <- function(x, y) {
> >>     sinc <- function(x) {
> >>         y <- sin(x)/x
> >>         y[is.na(y)] <- 1
> >>         y
> >>     }
> >>     10 * sinc(sqrt(x^2 + y^2))
> >> }
> >>
> >> R>sinc.exp <- expression(z == Sinc(sqrt(x^2 + y^2)))
> >>
> >> R>z <- outer(x, y, rotsinc)
> >>
> >> R>par(bg = "white")
> >>
> >> R>persp(x, y, z, theta = 30, phi = 30, expand = 0.5,
> >>     col = "lightblue")
> >> Waiting to confirm page change...
> >>
> >> R>title(sub = ".")
> >>
> >> R>title(main = sinc.exp)
> >>
> >> R>persp(x, y, z, theta = 30, phi = 30, expand = 0.5,
> >>     col = "lightblue", ltheta = 120, shade = 0.75, 
> ticktype = "detailed",
> >>     xlab = "X", ylab = "Y", zlab = "Z")
> >> Waiting to confirm page change...
> >>
> >> R>title(sub = ".")
> >>
> >> R>title(main = sinc.exp)
> >>
> >> R>z <- 2 * volcano
> >> Error in eval.with.vis(expr, envir, enclos) :
> >>         Object "volcano" not found
> >>
> >> So most of this demo works but volcano is not found.
> >> Any ideas what may be going wrong.
> >> Also for example
> >> R>?reshape
> >> R>summary(Indometh)
> >> Error in summary(Indometh) : Object "Indometh" not found
> >
> > For some reason you do not have the datasets package attached.
> >
> >> find(Indometh)
> > [1] "package:datasets"
> >> find(volcano)
> > [1] "package:datasets"
> >
> > ______________________________________________
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> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
> >
> 
> -- 
> Brian D. Ripley,                  ripley at 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 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> 
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