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Find Objects by Partial Name
Syntax
apropos(pattern, where=FALSE)
Arguments
pattern
|
a regular expression to match against
|
where
|
a logical indicating whether positions in the search list
should also be returned
|
Description
apropos
returns a vector of character strings giving the names of
all objects in the search list matching pattern
. If where
is TRUE
, their position in the search list is returned as their
names attribute.
Authors
Kurt Hornik and Martin Maechler (May 1997).
See Also
objects
for listing objects from one place,
search
for the search path.
Examples
apropos("lm")
apropos("ls")
apropos("lq")
# 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,}$")))