help | R Documentation |
The ?
and help
functions are replacements for functions of the
same name in the utils package. They are made available when a package is
loaded with load_all()
.
# help(topic, package = NULL, ...)
# ?e2
# e1?e2
topic |
A name or character string specifying the help topic. |
package |
A name or character string specifying the package in which to search for the help topic. If NULL, search all packages. |
... |
Additional arguments to pass to |
e1 |
First argument to pass along to |
e2 |
Second argument to pass along to |
The ?
function is a replacement for utils::?()
from the
utils package. It will search for help in devtools-loaded packages first,
then in regular packages.
The help
function is a replacement for utils::help()
from
the utils package. If package
is not specified, it will search for
help in devtools-loaded packages first, then in regular packages. If
package
is specified, then it will search for help in devtools-loaded
packages or regular packages, as appropriate.
## Not run:
# This would load devtools and look at the help for load_all, if currently
# in the devtools source directory.
load_all()
?load_all
help("load_all")
## End(Not run)
# To see the help pages for utils::help and utils::`?`:
help("help", "utils")
help("?", "utils")
## Not run:
# Examples demonstrating the multiple ways of supplying arguments
# NB: you can't do pkg <- "ggplot2"; help("ggplot2", pkg)
help(lm)
help(lm, stats)
help(lm, 'stats')
help('lm')
help('lm', stats)
help('lm', 'stats')
help(package = stats)
help(package = 'stats')
topic <- "lm"
help(topic)
help(topic, stats)
help(topic, 'stats')
## End(Not run)
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