[R] Lattice plot with fitted curves

[Deepayan Sarkar]

On 9/1/06, David Scott <d.scott at auckland.ac.nz> wrote:
>
> I have some data which consists of time series for a number of sites. It
> appears that there is not much autocorrelation in the data and I have
> fitted a cubic for each site using lm. I would like to obtain a lattice
> plot with one panel for each site and showing the original data, and the
> fitted cubic.
>
> The closest I have got to doing what I want is:
>
> fit <- fitted(paraslm1)
> temp <- cbind(paras, fit)
> xyplot(Density ~ Year | LocCode, data = temp,
>         panel = function(x, y, ...){
>           panel.xyplot(x,y)
>           panel.xyplot(x[LocCode],fit[LocCode],type="l")
>         })
>
> This doesn't give an error (most of my other attempts did), and draws the
> panels correctly with the original data, but doesn't draw the fitted
> lines.
>
> paraslm1 is my fitted linear model with cubics for each location.

I'm guessing since I don't have actual data to work with, but the
following is probably what you are trying to do:

xyplot(Density + fit ~ Year | LocCode, data = temp,
       panel = panel.superpose.2,
       type = c('p', 'l'))

-Deepayan