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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