[R] Lattice Histogram Scaling

Richard M. Heiberger rmh at temple.edu
Tue Aug 15 03:36:41 CEST 2017


Your example is not easily reproducible.
The REBayes requires Rmosek which requires a system command MOSEK.
Please try again with an example using data in base R.

Meanwhile, my guess is that you will need to do something like
explicitly specifying xlim and ylim so all panels have the same
limits.

On Mon, Aug 14, 2017 at 5:41 PM, Roger Koenker <rkoenker at illinois.edu> wrote:
> I am trying to do some comparisons of density estimators using lattice.
> The code below attempts to plot the same histogram in each panel and
> then overplots a kernel estimate with different bandwidths. Finding
> packet.number() was a bit arduous, but seems to do what I want.  My
> concern now is that close examination of the 4 histograms reveals that
> they are different even though they use the same data, and use the
> same binning.  Can someone explain this, or better yet suggest a fix?
> Admittedly, the kernel estimates are rather silly, they are just standing
> in for something else that I would like to think is less silly.
>
> Many thanks,
> Roger
>
>
> require(REBayes)  # Source for the velo data
> require(lattice)
> x <- velo
> x <- x[!(x == 0)]
> bandwidths <- (1:4)*10
> lp <- histogram(~x|bw, nint = 100, border = grey(.9), col = grey(.9),
>                 type = "density", panel = function(x, bw = bandwidths, ...){
>             panel.histogram(x, ...)
>             f <- density(x, bw[packet.number()])
>             panel.lines(f$x, f$y, col = "blue", lwd = 1.5)
>             })
> print(lp)
>
>
> url:    www.econ.uiuc.edu/~roger            Roger Koenker
> email    rkoenker at uiuc.edu            Department of Economics
> vox:     217-333-4558                University of Illinois
> fax:       217-244-6678                Urbana, IL 61801
>
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