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-boun...@r-project.org [mailto:r-sig-mac-bounces@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. > > [[alternative HTML version deleted]] > > _______________________________________________ > R-SIG-Mac mailing list > r-sig-...@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-mac ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.