The problem is that there is no file morley.tab. I belive that for first impression or example session, things should work.
Have you read from the beginning in Appendix A? It says:
"Login, start your windowing system. You should also have the file ‘morley.tab’ in your working directory. If not, seek the local expert (or get it yourself from the ‘datasets/data’ subdirectory of the default R library tree). If you have, proceed."
The point is that we cannot get the file anymore from "datasets/data", because since the days of R-2.0.0 we have the data in package "datasets" lazy loaded and the file "morley.tab" is not available in binary installations. Hence it is a bug.
Possible solution:
We could copy the file to something like .../src/library/datasets/inst/intro/morley.tab
It would also make sense to simplify the Appendix A stuff in R-intro, because this is (well, has been) a more or less frequently asked question (I wonder why nobody has asked during the last 3 months ....):
filename <- file.path(.find.package("datasets"), "intro", "morley.tab")) filename file.show(filename) mm <- read.table(filename)
Uwe Ligges
file.show("morley.tab") mm <- read.table("morley.tab")
-----Original Message-----
From: Kjetil Brinchmann Halvorsen [mailto:[EMAIL PROTECTED]
Sent: Fri 2004-12-31 22:01
To: Gorjanc Gregor
Cc: r-devel@stat.math.ethz.ch
Subject: Re: [Rd] R-intro
Gorjanc Gregor wrote:
Hello!
I was reading R-intro and I have some suggestions:
R-intro.html#A-sample-session
rm(fm, fm1, lrf, x, dummy) suggestion rm(fm, fm1, lrf, x, y, w, dummy)
The next section will look at data from the classical experiment of Michaelson and Morley to measure the speed of light.
file.show("morley.tab") mm <- read.table("morley.tab") suggestion mm <- data(morley)
No. Although this looks easier, the whole point is to show people how to use read.table!
Kjetil
rm(fm, fm0) suggestion rm(fm, fm0, mm)
objects(); rm(x, y, f, fa) suggestion objects(); rm(x, y, f, fa, oldpar)
It might also be usefull to use # for comments, since it is easier to copy&paste to R terminal from manual.
-- Lep pozdrav / With regards, Gregor GORJANC
--------------------------------------------------------------- University of Ljubljana Biotechnical Faculty URI: http://www.bfro.uni-lj.si Zootechnical Department email: gregor.gorjanc <at> bfro.uni-lj.si Groblje 3 tel: +386 (0)1 72 17 861 SI-1230 Domzale fax: +386 (0)1 72 17 888 Slovenia
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