apropos {base} | R Documentation |
apropos
returns a vector of character strings 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 only word. |
apropos
returns a vector of character strings giving the names of
all objects in the search list matching what
.
If mode != "any"
only those objects which are of mode mode
are considered.
If where
is TRUE
, their position in the search list is
returned as their names attribute.
find
is a different user interface to the same task as apropos
.
However, by default (simple.words == TRUE
), only full words are
searched.
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.
apropos("lm") apropos(ls) apropos("lq") lm <- 1:pi find(lm) ##> ".GlobalEnv" "package:base" find(lm, num=T) ## .. numbers with these names find(lm, num=T, mode="function")# only the second one rm(lm) apropos(".", mode="list") # need a DOUBLE backslash `\\' (in case you don't see it anymore) apropos("\\[") # 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,}$")))