On 3/26/2008 12:20 PM, Faheem Mitha wrote: > Hi, > > Can anyone point me to documentation of how R objects such as vectors, > lists, matrices and data frames are laid out in memory? For example, which > of these are laid out as a 1-d array, 2-d array and so forth?
Vectors, lists and matrices are 1-d arrays. Data frames are lists of vectors. This is in various places in the Intro and Language Reference manuals. For example, from the latter: "Matrices and arrays are simply vectors with the attribute dim and optionally dimnames attached to the vector." Duncan Murdoch > The R Internals document seems like the natural place to look, but I don't > see it there. If such things are only documented in source code, could you > point me to the relevant place(s)? > > (Please CC me; I'm not subscribed.) > Thanks, Faheem. > > ______________________________________________ > 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. ______________________________________________ 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.
