eapply {base} R Documentation

## Apply a Function Over Values in an Environment

### Description

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 enclosing environments are searched.

### Usage

eapply(env, FUN, ..., all.names = FALSE, USE.NAMES = TRUE)


### Arguments

 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.

### Value

A named (unless USE.NAMES = FALSE) list. Note that the order of the components is arbitrary for hashed environments.

environment, lapply.

### Examples

require(stats)

env <- new.env(hash = FALSE) # so the order is fixed
env$a <- 1:10 env$beta <- exp(-3:3)
env\$logic <- c(TRUE, FALSE, FALSE, TRUE)
# what have we there?
utils::ls.str(env)

# 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)


[Package base version 4.3.0 Index]