[R] lattice: plotting in a loop

[baptiste auguie]

Hi,
it's a FAQ, you need to print() the plot,

http://cran.r-project.org/doc/FAQ/R-FAQ.html#Why-do-lattice_002ftrellis-graphics-not-work_003f

baptiste

2009/11/25 Ryan Archer <ra.lists.r at gmail.com>:
> Hi,
>
> I'm having trouble seeing graphics output from lattice xyplot() when called
> from inside a for loop:
>
> x <- 1:50
> for ( i in 1:5 ) {
>  y <- rnorm(x)
>  xyplot(y~x)          # no graphics when inside for-loop
> # plot(x,y)            # works fine
> # Sys.sleep(0.5)       # doesn't seem to help
> }
>
> The xyplot() is fine outside the loop.  Results are the same to X11 device
> and to file devices.
>
> I have noticed that there is a delay proportional to the size of the loop,
> so presumably xyplot() is computing although the results aren't reaching the
> graphics device.
>
> Can anyone suggest a cause or remedy?
>
> This is my first post to the list, although I've picked up a lot of useful
> information reading here!
>
> -Ryan
>
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