Denis Aydin wrote:
>
> I try to make a histogram from a variable that contains the number of
> shoots from about 1000 individuals from a specific plant species (the
> range is 1-110).
> Those numbers are highly skewed to the right.
>
> My question is: how can I make my own classes with the lattice
> "histogram"?
>
> I tried it with "breaks=c(0,5,10,15,20,25,110)" but my "25-110"-class is
> presented
> as one huge bin ranging from 25 to 110.
> Is there a way to plot this bin in equal size as the others?
> And how is it possible to change the annotation of the x-axis, let's
> say the last tick named ">25"?
>
There may be a more elegant way to do this within 'hist', but you can create
the binned data with hist and then plot it with 'barplot' to get even width
bars:
tmp1 <- hist(your.data, breaks=c(0, 5, 10, 15, 20, 25, 110))
barplot(tmp1$counts, names.arg=c("0", "5", "10", "15", "20", "25", ">25"))
The names.arg list handles the x-axis labels, as you wished.
-----
David Hewitt
Virginia Institute of Marine Science
http://www.vims.edu/fish/students/dhewitt/
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