l_ply {plyr}R Documentation

Split list, apply function, and discard results.

Description

For each element of a list, apply function and discard results

Usage

  l_ply(.data, .fun = NULL, ..., .progress = "none",
    .print = FALSE)

Arguments

.data

list to be processed

.fun

function to apply to each piece

...

other arguments passed on to .fun

.progress

name of the progress bar to use, see create_progress_bar

.print

automatically print each result? (default: FALSE)

Details

All plyr functions use the same split-apply-combine strategy: they split the input into simpler pieces, apply .fun to each piece, and then combine the pieces into a single data structure. This function splits lists by elements and discards the output. This is useful for functions that you are calling purely for their side effects like display plots and saving output.

References

Hadley Wickham (2011). The Split-Apply-Combine Strategy for Data Analysis. Journal of Statistical Software, 40(1), 1-29. http://www.jstatsoft.org/v40/i01/.


[Package plyr version 1.7.1 Index]