R help - Feb 2009 - Plotting Binned Data

Dear all,

I have a binned data that looks like this:
> dat
  (-1,9]   (9,19]  (19,29]  (29,39]  (39,49]  (49,59]  (59,69]  (69,79]
10063374       79       16        4        3        4        4        3
 (79,89]  (89,99]
       6        2

I tried to plot a histogram overlayed with curve.
With the following snippet:

library(lattice)
pdf("myfile.pdf")

hist(dat)
lines(dat,col="red")
dev.off()
__ END__

However the number of bins it plot is not the same
with "dat" (i.e. 10 bins). It only gives 6 bins.
The actual output can be seen in this URL

http://docs.google.com/Doc?id=dcvdrfrh_5cm5qkchw

How can I fix the code so that it gives a exact plot
to "dat" above, with same number of bins and its
respective frequency?

- Gundala Viswanath
Jakarta - Indonesia

Gundala Viswanath wrote:
> 
> Dear all,
> 
> I have a binned data that looks like this:
> 
>> dat
>   (-1,9]   (9,19]  (19,29]  (29,39]  (39,49]  (49,59]  (59,69]  (69,79]
> 10063374       79       16        4        3        4        4        3
>  (79,89]  (89,99]
>        6        2
> 
> I tried to plot a histogram overlayed with curve.
> With the following snippet:
> 
> library(lattice)
> pdf("myfile.pdf")
> 
> hist(dat)
> lines(dat,col="red")
> dev.off()
> __ END__
> 
> 
I think barplot is what you want: something like
barplot(dat,names.arg=names(dat))

  Are you sure you want to keep the first element
of dat?  You're certainly not going to be able to
see anything that's going on with the other
values ...

barplot(dat[-1],names.arg=names(dat)[-1])

  Ben Bolker

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