[R] labels in hist and ranges of an axis

[Gerrit Eichner]

Carol,

it is not clear to me which function histogram() you use (package lattice, 
package histogram ...?), but -- if it is not a lattice function -- a quick 
hack _might_ be to use

> par( cex = 2)

or whatever magnification you wish followed by a reduction of cex.axis, 
cex.labels etc. according to your needs.

If you used plot.histogram() take a look at its code by

> graphics:::plot.histogram

and you will see (at the end of the body of the function) that there is no 
"direct" way (i.e., through arguments of the function) of changing 
anything regarding the "data labels" except the one way mentioned above or 
writing your own function plot.histogram().

  Regards -- Gerrit

On Mon, 14 May 2012, carol white wrote:

> cex.axis changes the size of the axis label. I want to change the size 
> of data labels that are displayed at the top of the bars in the 
> histogram. What we obtain by histogram(...,labels=T)



________________________________
  From: Gerrit Eichner <Gerrit.Eichner at math.uni-giessen.de>
To: carol white <wht_crl at yahoo.com> 
Cc: "r-help at stat.math.ethz.ch" <r-help at stat.math.ethz.ch> 
Sent: Monday, May 14, 2012 11:31 AM
Subject: Re: [R] labels in hist and ranges of an axis

Hi, Carol!

> How is it possible to change the character size of labels in a histogram (labels parameter in hist)?
See

?par

-> cex.axis


> How is it possible to display the ranges of an axis in 3 significant digits?
See

?axis

and its argument "at" together with

?signif


Hth  --  Gerrit

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