Re: What command lists everything in a package?

> On 7/3/2009 1:21 PM, Mark Knecht wrote:
>
> > Hi,
> >   Two easy questions I'm sure.
> >
> > 1) As an example if I use the code
> >
> > require(zoo)
> >
> > then once it's loaded is there a command that lists everything that
> > zoo provides so that I can study the package?
> >
>
>  ls("package:zoo") will list all the exported items in zoo, provided it is
> attached. You can abbreviate that to the number in the search list, which is
> usually 2 immediately after you attach the package.  So
>
>  require(zoo)
>  ls(2)
>
>  will probably do what you want.  Use search() to see the search list.
>
>  Duncan Murdoch
>
>
> >
> >   Certainly help(zoo) gives me some clues about what zoo does but I'd
> > like a list. Maybe there's a way to query something but in Rgui under
> > Win Vista ls() returns nothing after zoo is loaded.
> >
> > 2) Related to the above, how do I tell what packages are currently
> > loaded at any given time so that I don't waste time loading things
> > that are already loaded? search() tells me what's available, but
> > what's loaded? The best I can find so far goes like this:
> >
> >
> > > a<-.packages(all.available = FALSE)
> > > a
> > >
> > [1] "zoo"       "stats"     "graphics"  "grDevices" "utils"     "datasets"
> > [7] "methods"   "base"
> >
> > >
> > >
> >
> > Maybe that's as good as it gets in code and if I want better then I
> > write a function?
> >
> > Thanks,
> > Mark
> >
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> >
>
>