cannot access the functions in the package
On Dec 9, 2011, at 7:27 AM, Duncan Murdoch wrote:
On 11-12-08 1:30 PM, Weizeng Ni wrote:
hi, I am using the package of "Fslector" which contains a function named "information.gain". I want to see the detailed code of this function. the result shows
information.gainfunction (formula, data)
{
information.gain.body(formula, data, type = "infogain")
}
When I then try to see the code of information.gain.body, it shows
Error: could not find function "information.gain.body".
Why cannot I get access to the codes?
You probably need to use Fslector:::information.gain.body, or (even
better) look at the source for the package, which you should be able
to get using
download.packages("Fslector", type="source", destdir=<your directory>)
I'm not educated enough to know off the top of my head whether Fslector:::information.gain.body ... is exactly equivalent to: getAnywhere(Fslector) .... but typing those two function names at the console prompt makes me think they may have some differences, but still for me they have seemed pretty much equivalent: `:::` getAnywhere The second one was recommended by Uwe Ligges in his Help Desk article a few years back on "accessing the sources". http://cran.r-project.org/doc/Rnews/Rnews_2006-4.pdf Can also be found at (a page with which I was unfamiliar with until RSeek just showed it to me): http://developer.r-project.org/TechDocs/ That page looks to me to be an excellent second course in R after the "Introduction"
David Winsemius, MD West Hartford, CT