morley object?

filepath <- system.file("data", "moreley.tab", package="datasets")
filepath

filepath <- system.file("data", "morley.tab", package="datasets")
filepath

mm <- read.table(filepath)
head(mm)

-----Original Message-----
From: r-sig-mac-bounces at r-project.org [mailto:r-sig-mac-bounces at r-
project.org] On Behalf Of Ann Summy
Sent: November-22-13 4:56 PM
To: r-sig-mac; r-help
Subject: [R-SIG-Mac] morley object?

Brand new to R and not a sys admin or programmer type.  I am trying to work
through the intro tutorial in the sample session here
http://cran.r-project.org/doc/manuals/R-intro.html#A-sample-session.

I have an error when following the instructions below:

The next section will look at data from the classical experiment of
Michelson to measure the speed of light. This dataset is available in the
morley object, but we will read it to illustrate the read.table function.
filepath <- system.file("data", "morley.tab" ,

package="datasets")filepath

Get the path to the data file.
file.show(filepath)

Optional. Look at the file.
mm <- read.table(filepath)mm

Read in the Michelson data as a data frame, and look at it. There are

five

experiments (column Expt) and each has 20 runs (column Run) and sl is the
recorded speed of light, suitably coded.

Here is my result:

filepath <- system.file("data", "moreley.tab", package="datasets")

filepath

[1] ""

file.show(filepath)

mm <- read.table(filepath)

Error in read.table(filepath) : no lines available in input

In addition: Warning message:

In file(file, "rt") :

  file("") only supports open = "w+" and open = "w+b": using the former


Is it because I am missing this "morley object"?  How do I see a list of
what objects I have installed?  I installed
R-2.15.3.pkg<http://cran.r-project.org/bin/macosx/old/R-2.15.3.pkg>,
because
I am teaching myself on a 32-bit Macbook.

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