How to combine do.call() plot() and [removed])

Question

I am getting an error when I try and combine using expression with do.call and plot.

 x <- 1:10
 y <- x^1.5
         


        

Answer 1

You can use alist rather then list

p <- alist(xlab=expression(paste("Concentration (",mu,"M)")))
do.call(plot,c(y~x,p))

Answer 2

Setting quote=TRUE also works. It in effect prevents do.call() from evaluating the elements of args before it passes them to the function given by what.

x <- 1:10
y <- x^1.5
p <- list(xlab=expression(paste("Concentration (",mu,"M)",sep="")))

do.call(what = "plot", args = c(y ~ x, p), quote = TRUE)

Answer 3

do.call evaluates the parameters before running the function; try wrapping the expression in quote:

p <- list(xlab=quote(expression(paste("Concentration (",mu,"M)"))))
do.call("plot", c(y~x, p))