imager (version 0.14)

idply: Split an image along axis, apply function, return a data.frame

Description

Shorthand for imsplit followed by ldply

Usage

idply(im, axis, fun, ...)

Arguments

im

image

axis

axis for the split (e.g "c")

fun

function to apply

...

extra arguments to function fun

Examples

parrots <- load.image(system.file('extdata/parrots.png',package='imager'))
idply(parrots,"c",mean) #mean luminance per colour channel