mlply {plyr} | R Documentation |
Call a multi-argument function with values taken from columns of an data frame or array, and combine results into a list
mlply(.data, .fun = NULL, ..., .progress = "none")
.data |
matrix or data frame to use as source of arguments |
.fun |
function to be called with varying arguments |
... |
other arguments passed on to .fun |
.progress |
name of the progress bar to use, see create_progress_bar |
The m*ply
functions are the plyr
version of mapply
,
specialised according to the type of output they produce. These functions
are just a convenient wrapper around a*ply
with margins = 1
and .fun
wrapped in splat
.
This function combines the result into a list. If there are no results,
then this function will return a list of length 0 (list()
).
list of results
Hadley Wickham <h.wickham@gmail.com>
mlply(cbind(1:4, 4:1), rep) mlply(cbind(1:4, times = 4:1), rep) mlply(cbind(1:4, 4:1), seq) mlply(cbind(1:4, length = 4:1), seq) mlply(cbind(1:4, by = 4:1), seq, to = 20)