Thanks Joshua.

The two criteria are separate...

So I have to produce two separate plots...

Thanks again!

On Fri, Mar 9, 2012 at 6:54 PM, Joshua Wiley <jwiley.psych@gmail.com> wrote:

> Hi Michael,
>
> Although I do think ggplot2 does a superb job of elegant data
> visualization; I am not sure any graphics package will do what you
> want.  I suspect you will first have to do some work binning your
> data, and then plot in your package of choice.
>
> In the situation that you have described, I do not believe your two
> criteria can be met.  Having x bins of equal size seems prohibitive of
> having equal number of points in each, when values are highly
> dispersed.
>
> Just as a heads up, for this specific of a task, I would expect you
> will spend a few hours more than you already have.  If you are willing
> to be a bit more flexible in your requirements, there are various
> binning algorithms in ggplot2 and other packages you could use to bin
> x valus, and then plot those against y quantiles.
>
> You are more likely to get a clear answer from the list if you can
> provide some sample data and perhaps a few example graphs showing what
> you hope to achieve.  An easy way to provide some sample data is using
> the dput() function and then paste the output into your (plaintext
> please) email).
>
> Cheers,
>
> Josh
>
> On Fri, Mar 9, 2012 at 4:37 PM, Michael <comtech.usa@gmail.com> wrote:
> > Hi all,
> >
> > I am trying hard to do the following and have already spent a few hours
> in
> > vain:
> >
> > I wanted to do the scatter plot.
> >
> > But given the high dispersion on those dots, I would like to bin the
> x-axis
> > and then for each bin of the x-axis, plot the quantiles of the y-values
> of
> > the data points in each bin:
> >
> > 1. Uniform bin size on the x-axis;
> > 2. Equal number of observations in each bin;
> >
> > How to do that in R? I guess for the sake of prettyness, I'd better do it
> > in ggplot2?
> >
> > Thank you!
> >
> >        [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@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<http://www.r-project.org/posting-guide.html>
> > and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
> Joshua Wiley
> Ph.D. Student, Health Psychology
> Programmer Analyst II, Statistical Consulting Group
> University of California, Los Angeles
> https://joshuawiley.com/
>

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