[R] how to get variables from hist?
Anders Nielsen
anielsen at math.ku.dk
Tue Nov 14 13:01:33 CET 2000
On Tue, 14 Nov 2000, Meriema Belaidouni wrote:
> hello,
> my question concerns how to get variables from hist function?
> pp is some variable
> >hist(pp) #gives the histogram of pp
> >str(hist(pp)) #gives 4 variables which values are for example
> $breaks : num[1..18] 5 10 15 20 25 ...
> $counts : int[1..17] 1215 19381 47721 ...
> $ intensities : num [1..17] 0.00243 0.03876 0.09544 ...
> $mids : num[1..17] 7.5 12.5 17.5 22.5 ...
>
> I want to plot intensities against mids for example
> what I need is to get intensities and mids as variables to be able to
> use plot function.
>
Try something like;
> x<-rnorm(1000)
> x.hist<-hist(x, plot=F) #now the histogram is stored in x.hist
> x.hist
$breaks
[1] -4 -3 -2 -1 0 1 2 3 4
$counts
[1] 1 24 143 333 338 137 22 2
$intensities
[1] 0.001 0.024 0.143 0.333 0.338 0.137 0.022 0.002
$mids
[1] -3.5 -2.5 -1.5 -0.5 0.5 1.5 2.5 3.5
> plot(x.hist$mids, x.hist$intensities)
(See also ?density)
Anders
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
More information about the R-help
mailing list