| apropos {utils} | R Documentation |
apropos returns a character vector giving the names of
all objects in the search list matching what.
find is a different user interface to the same task as apropos.
apropos(what, where = FALSE, mode = "any") find(what, mode = "any", numeric. = FALSE, simple.words = TRUE)
what |
name of an object, or regular expression to match against |
where, numeric. |
a logical indicating whether positions in the search list should also be returned |
mode |
character; if not "any", only objects who's
mode equals mode are searched. |
simple.words |
logical; if TRUE, the what argument is
only searched as whole word. |
If mode != "any" only those objects which are of mode mode
are considered.
If where is TRUE, the positions in the search list are
returned as the names attribute.
find is a different user interface for the same task as apropos.
However, by default (simple.words == TRUE), only full words are
searched with grep(fixed = TRUE).
Kurt Hornik and Martin Maechler (May 1997).
objects for listing objects from one place,
help.search for searching the help system,
search for the search path.
## Not run: apropos("lm")
apropos(ls)
apropos("lq")
cor <- 1:pi
find(cor) #> ".GlobalEnv" "package:stats"
find(cor, num=TRUE) # numbers with these names
find(cor, num=TRUE, mode="function")# only the second one
rm(cor)
## Not run: apropos(".", mode="list") # a long list
# need a DOUBLE backslash '\\' (in case you don't see it anymore)
apropos("\\[")
## Not run: # everything
length(apropos("."))
# those starting with 'pr'
apropos("^pr")
# the 1-letter things
apropos("^.$")
# the 1-2-letter things
apropos("^..?$")
# the 2-to-4 letter things
apropos("^.{2,4}$")
# the 8-and-more letter things
apropos("^.{8,}$")
table(nchar(apropos("^.{8,}$")))
## End(Not run)