[R] vector of center of

[ripley@stats.ox.ac.uk]

cut will give you a factor identifying the class for each point, and
if you have a vector of midpoints just index it by the factor.

On Mon, 18 Nov 2002, Fred Jean wrote:

> Hello
>
> I have a vector gd of 279 values of diameter of limpets.
>
> Using 'hist(gd, breaks=seq(10,60,5),plot=F)' I can obtain a vector of
> 10 centers of size-class ($mids).
>
> But I'd like to work on a vector of 279 values being the mids (centers
> of size-classes) corresponding to the respective 279 values in gd.
>
> I looked in the different manuals and in archives of list but didn't find how
> to obtain such a vector... I looked around in the manual of functions such as
> levels, density, ... but didn't find a simple solution, which may exists I
> believe.
>
> thanks so much for taking time to answer this (naive/newbie) question.
>
> Fred
>
>
>
>
>
>
>
> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> 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
> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._