[R-SIG-Mac] morley object?

[Steven McKinney]

Hi Ann

Looks like a typo - I see "moreley.tab" that should be "morley.tab".
Works for me after correcting that.

> filepath <- system.file("data", "moreley.tab", package="datasets")
> filepath
[1] ""
> 
> filepath <- system.file("data", "morley.tab", package="datasets")
> filepath
[1] "C:/PROGRA~1/R/R-30~1.1/library/datasets/data/morley.tab"
> mm <- read.table(filepath)
> head(mm)
    Expt Run Speed
001    1   1   850
002    1   2   740
003    1   3   900
004    1   4  1070
005    1   5   930
006    1   6   850
> 


Steven McKinney

Statistician
Molecular Oncology and Breast Cancer Program
British Columbia Cancer Research Centre





> -----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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> 
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