maply {plyr} | R Documentation |
Call a multi-argument function with values taken from columns of an data frame or array, and combine results into an array
maply(.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 an array. If there are no results,
then this function will return a vector of length 0 (vector()
).
if results are atomic with same type and dimensionality, a vector, matrix or array; otherwise, a list-array (a list with dimensions)
Hadley Wickham <h.wickham@gmail.com>
maply(cbind(mean = 1:5, sd = 1:5), rnorm, n = 5) maply(cbind(1:5, 1:5), rnorm, n = 5) maply(expand.grid(mean = 1:5, sd = 1:5), rnorm, n = 5)