| eapply {base} | R Documentation |
eapply applies FUN to the named values from an
environment and returns the results as a list. The user
can request that all named objects are used (normally names that begin with a
dot are not). The output is not sorted and no parent environments are
searched.
This is a primitive function.
eapply(env, FUN, ..., all.names = FALSE, USE.NAMES = TRUE)
env |
environment to be used. |
FUN |
the function to be applied, found via
match.fun.
In the case of functions like +, %*%, etc., the
function name must be backquoted or quoted. |
... |
optional arguments to FUN. |
all.names |
a logical indicating whether to apply the function to all values. |
USE.NAMES |
logical indicating whether the resulting list should
have names. Setting this to FALSE is faster,
useful however typically only when ls(env) is already
given. |
require(utils); require(stats)
env <- new.env()
env$a <- 1:10
env$beta <- exp(-3:3)
env$logic <- c(TRUE,FALSE,FALSE,TRUE)
# what have we there?
eapply(env, str)
## note however, that 'ls.str(env)' is slightly nicer ..
# compute the mean for each list element
eapply(env, mean)
unlist(eapply(env, mean, USE.NAMES = FALSE))
# median and quartiles for each element (making use of "..." passing):
eapply(env, quantile, probs = 1:3/4)
eapply(env, quantile)