[R] Simple qqplot question

[Ralf B]

More details...

I have two distributions which are very similar. I have plotted
density plots already from the two distributions. In addition,
I created a qqplot that show an almost straight line. What I want is a
line that represents the ideal case in which the two
distributions match perfectly. I would use this line to see how much
the errors divert at different stages of the plot.

Ralf



On Thu, Jun 24, 2010 at 5:56 PM, stephen sefick <ssefick at gmail.com> wrote:
> You are going to have to define the question a little better.  Also,
> please provide a reproducible example.
>
> On Thu, Jun 24, 2010 at 4:44 PM, Ralf B <ralf.bierig at gmail.com> wrote:
>> I am a beginner in R, so please don't step on me if this is too
>> simple. I have two data sets datax and datay for which I created a
>> qqplot
>>
>> qqplot(datax,datay)
>>
>> but now I want a line that indicates the perfect match so that I can
>> see how much the plot diverts from the ideal. This ideal however is
>> not normal, so I think qqnorm and qqline cannot be applied.
>>
>> Perhaps you can help?
>>
>> Ralf
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
> --
> Stephen Sefick
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