From: Douglas Bates <dmbates_at_gmail.com>

Date: Sat 25 Jun 2005 - 01:24:34 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 25 01:29:59 2005

Date: Sat 25 Jun 2005 - 01:24:34 EST

On 6/24/05, Jim Brennan <jfbrennan@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"

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jun 25 01:29:59 2005

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