passing parameters to ggplot

Question

would like to create a function that generates graphs using ggplot. For the sake of simplicity, the typical graph may be

ggplot(car, aes(x=speed, y=dist)) +          


        

Answer 1

I think it's possible the following type of codes, which only build the aes component.

require(ggplot2)

DS <- data.frame(speed=rnorm(10), dist=rnorm(10))

f <- function(DS, x, y, geom, opts=NULL) {
  aes <- eval(substitute(aes(x, y),
    list(x = substitute(x), y = substitute(y))))
  p <- ggplot(DS, aes) + geom + opts
}

p <- f(DS, speed, dist, geom_point())
p

However, it seems to be complicated approach.