[R] R demos

[Prof Brian Ripley]

On Fri, 24 Jun 2005, Jim Brennan wrote:

> 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.?

see the rw-FAQ.

> 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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>>
>
> -- 
> 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
>
>

-- 
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