[R] histogram-like plot with two variables
Duncan Murdoch
murdoch at stats.uwo.ca
Mon Sep 29 12:51:19 CEST 2008
On 28/09/2008 10:02 PM, Jörg Groß wrote:
> Hi,
>
> I want to plot a binomial propability distribution.
>
> I know how to generate the data;
>
> x <- seq(from=0, to=14, by=1)
> y <- dbinom(x, 14, 0.7, log = FALSE)
>
> but what I don't know is how to plot this within a histogram like plot.
> Because the histogram function only accepts one variable.
>
> Is there a way to get the look of "hist()" with two variables?
>
>
>
> I tried:
> plot(x,y, type="h")
> but the bars are very thin -is there a way to define the width?
You could use barplot():
barplot(y,names=x)
You could also do it with plot.histogram, but it's trickier, because
it's designed for continuous data. For example,
dat <- hist(x, plot=FALSE, breaks=c(-1,x)+0.5)
dat$density <- y
plot(dat, freq=FALSE)
Duncan Murdoch
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