Hi,
Try:
plotx <- function(x,y, ...){
labels <- list(xlab="x",ylab="y")
args <- modifyList(labels,list(x=x,...))
do.call("plot",args)
}
plotx(1:100,1:100,xlab="I Don't Work!")
A.K.
On Wednesday, February 5, 2014 11:14 AM, Dustin Fife <fife.dus...@gmail.com>
wrote:
Suppose I'm creating a function that sets default ylab and xlab behaviors:
plotx = function(x, y, ...){
plot(x,y, ylab="", xlab="",...)
}
The problem is, on occasion, I actually want to override the defaults
in my function. I would like to do the following:
plotx(1:100, 1:100, xlab="I Don't Work!")
But I get the "multiple actual arguments" error message (which makes
sense). Does anyone know how to set a default (like plotx does), but
allow it to change if the user specifies the same argument via ...?
I tried doing something like this:
plotx = function(x, y, ...){
args = list(...)
yl = ifelse(!is.null(args$ylab), args$ylab, "")
xl = ifelse(!is.null(args$xlab), args$xlab, "")
plot(x,y, ylab=yl, xlab=xl,...)
}
but got the same error. I then started thinking that maybe I can
remove the ylab and xlab arguments from ..., but I don't know how I'd
do that. Any ideas of how to remove it? Or, is there a better way of
doing this? Thanks!
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and provide commented, minimal, self-contained, reproducible code.
