Question

Is it possible to create a graph form 0% to 100% on the x axis and
units on the y, and accumulate from y=0 to y=max, so I can say “X of
my elements occured within the first Y units”. Is there a predefined
stat in ggplot2 which allows me to do that?

Here’s some data: http://sprunge.us/XYJK

Answer 1

You can either apply it before processing with ggplot or during:

For example:

library(ggplot2)
library(scales)
library(XML) 
x <- eval(parse(file("http://sprunge.us/XYJK"))) # Your data
d <- data.frame(x=x,y=1:length(x)) 
d$z <- cumsum(d$x) / sum(d$x) # As percent

ggplot(d, aes(z,y)) + geom_line() + scale_x_continuous(label=percent)

OR

library(ggplot2)
library(scales)
d <- data.frame(x=x,y=1:100)
ggplot(d, aes(cumsum(x)/sum(x),y) + geom_line() + scale_x_continuous(label=percent)

I’m assuming this is sales data or something like that. So putting it in that context, 50% of revenue occurs from the first 5000 transactions.