Is ther a possibility to display the log(frequency) instead of the frequency in the hist plot?

Witold Eryk Wolski wrote:

 Is there a possibility to display the log(frequency) instead of the
frequency in the hist?

I think you want something like the following example:

 x <- runif(100) * 10
 my.hist <- hist(x)
 my.hist   # have a look at the values!
 my.hist$counts <- log(my.hist$counts, 10)  # logarithm with base 10
 plot(my.hist)  # now plot it again with log(frequency)

Uwe Ligges

Hi Uwe!
First thanks for your answer.
Some questions still remain to me.
1. How take an log if one of the my.hist$counts equals 0?
2. You code expample produces an error message which i doesnt understand.

plot(my.hist)  # now plot it again with log(frequency)

Error in plot.window(xlim, ylim, log, asp, ...) :
        invalid xlim
3. I tried as workaround something similar.
plot(my.hist$mids,log(my.hist$counts),type="s") And this would work quite good for
my needs.
But problem with log(0) = -Inf still remains.

I think I have to formulate my question more general. Why, and this is an question
which I am asking myself since
I am started using  R becouse im using the hist plot quite often,  the hist plot in
the base package has no similar
options like eg. the histogram plot in XMGR?


THX
Eryk

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--
Witold Eryk Wolski
Max Plank Institut fuer Molekulare Genetik
Ihnestr73 14195 Berlin
Germany
tel.:
Work 0049-30-84131426
http://www.molgen.mpg.de/~wolski


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