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What command lists everything in a package?

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	What command lists everything in a package? by Mark Knecht :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message 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? 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 ______________________________________________ R-help@... 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.
	Re: What command lists everything in a package? by Gabor Grothendieck :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message library(help = zoo) will list all the help files and, at the bottom, all the vignettes. It does not list demos so to get those you have to issue a second command: demo(package = "zoo") On Fri, Jul 3, 2009 at 1:21 PM, Mark Knecht<markknecht@...> 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? > > 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 > > ______________________________________________ > R-help@... 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@... 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.
	Re: What command lists everything in a package? by Duncan Murdoch-2 :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message 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 > > ______________________________________________ > R-help@... 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@... 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.
	Re: What command lists everything in a package? by Henrique Dallazuanna :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message To see all functions in a package: library(zoo) ls("package:zoo") On Fri, Jul 3, 2009 at 2:21 PM, Mark Knecht <markknecht@...> 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? > > 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 > > ______________________________________________ > R-help@... 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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[alternative HTML version deleted]] ______________________________________________ R-help@... 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.
	Re: What command lists everything in a package? by David Winsemius :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Jul 3, 2009, at 1:21 PM, Mark Knecht wrote: > Hi, > Two easy questions I'm sure. > > snipped as already answered > 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" What's wrong with using sessionInfo() ? ...or if you want (a lot) more information about the non-base packages try: sessionInfo()$otherPkgs David Winsemius, MD Heritage Laboratories West Hartford, CT ______________________________________________ R-help@... 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.
	Re: What command lists everything in a package? by Mark Knecht :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message Thanks to everyone for your answers. They were great and I think I have what I was looking for. Cheers, Mark On 7/3/09, Duncan Murdoch <murdoch@...> wrote: > 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 > > > > ______________________________________________ > > R-help@... 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@... 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.
	Re: What command lists everything in a package? by Philippe Grosjean :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message If you want a quick overview of a package (not just the name of the objects), you can also do: > library(help = zoo) Duncan Murdoch wrote: > 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 >> >> ______________________________________________ >> R-help@... 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@... 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@... 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.
	Re: What command lists everything in a package? by hadley :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message > 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: Loading something a second time takes hardly any time, so why worry about it? Hadley -- http://had.co.nz/ ______________________________________________ R-help@... 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.
	Re: What command lists everything in a package? by Barry Rowlingson :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Sun, Jul 5, 2009 at 3:40 PM, hadley wickham<h.wickham@...> wrote: >> 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: > > Loading something a second time takes hardly any time, so why worry about it? library() and require() already check to see if the package is loaded, so any test done before calling library() or require() is going to be redundant! library() uses: pkgname <- paste("package", package, sep = ":") newpackage <- is.na(match(pkgname, search())) require() uses: loaded <- paste("package", package, sep = ":") %in% search() Barry ______________________________________________ R-help@... 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.