Cumulative histogram with percentage on the Y axis

Question

I wish to plot in R project a cumulative histogram where on the Y axes is reported the percentage instead of the frequency

x <- c(rnorm(100), rnorm(50, mean=2,sd=.5))
h <- hist(x, plot=FALSE, breaks=20)
h$counts     <- cumsum(h$counts)
h$density    <- cumsum(h$density)
plot(h, freq=TRUE, main="(Cumulative) histogram of x", col="white", border="black")
box()

Thanks for help

Solution 1

Isn't this a plot of the empirical cumulative distribution function? As in

plot(ecdf(x))

which produces:

Solution 2

For a column plot histogram, you will want to do:

x <- c(rnorm(100), rnorm(50, mean=2,sd=.5))
hist( x,plot=FALSE) -> h # do a histogram of y and assign its info to h
h$counts <- cumsum(h$counts)/sum(h$counts) # replace the cell freq.s by cumulative freq.s
plot( h ) # plot a cumulative histogram of y

Source: http://influentialpoints.com/Training/basic_statistics_cumulative_plot.htm

Solution 3

Also try:

plot( sort(x), (1:length(x))/length(x), type="l" )

Solution 4

For a neat method Try:

plot.ecdf(x)

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