Any way to make histogram with unequal bin width?

[Mauricio]

Seems that the 'breaks' argument for stat_bin requires constant bin
width. Is there a way to get around this?

For example, I called the following:

ggplot(data=x, aes(x=var1)) + stat_bin(breaks=c(0, 2.5, 5, 10, 20,
30))

and got "Error: position_stack requires constant width".

Thanks much

[Kohske Takahashi]

Hi

I'm not understand what the unequal-bin-width histogram indicates, and
also I afraid that these kinds of plots confuse readers.
But as a counter part of built-in hist function, which accepts the
variable bin width,
you can do it by hand like this:

d <- rnorm(1000)
h <- hist(d, breaks = c(-5, -3, 1, 2, 3, 5), plot =F)
r <- data.frame(h[2:4], xmin = head(h$breaks, -1), xmax = h$breaks[-1])
ggplot(r, aes(xmin = xmin, xmax = xmax, ymin = 0, ymax = density)) +
geom_rect(colour="white")

--
Kohske Takahashi <takahash...@gmail.com>

Research Center for Advanced Science and Technology,
The University of  Tokyo, Japan.
http://www.fennel.rcast.u-tokyo.ac.jp/profilee_ktakahashi.html

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