R help - Dec 2007 - coplot and xyplot and panel functions

Hi,
 
I wrote a panel function called panelwhite.corplot. If i use this function in a
coplot is working fine, but if i use same function with xyplot i get the error:
Error using packet 1: plot.new has not been called yet ..... and so on filling
all my plots.
 
So with: 
 
coplot(be~ch|dbh1, envmetr1, panel=panelwhite.corplot)
 
I get the expected result
 
with:
 
xyplot(be~ch | dbh1, data=envmetr1, panel = panelwhite.corplot)
 
i get the error.
 
Can you point me to the error i am making here?
 
Same panel function works perfectly with the pairs command as well.
 
Thanks,
 
Monica
 
 
 
 
_________________________________________________________________


07
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On 12/3/07, Monica Pisica <pisicandru at hotmail.com>
wrote:
>
> Hi,
>
> I wrote a panel function called panelwhite.corplot. If i use this function
in a coplot is working fine, but if i use same function with xyplot i get the
error: Error using packet 1: plot.new has not been called yet ..... and so on
filling all my plots.
>
> So with:
>
> coplot(be~ch|dbh1, envmetr1, panel=panelwhite.corplot)
>
> I get the expected result
>
> with:
>
> xyplot(be~ch | dbh1, data=envmetr1, panel = panelwhite.corplot)
>
> i get the error.
>
> Can you point me to the error i am making here?
Lattice panel functions need to use grid graphics primitives.
Traditional graphics functions, like your panelwhite.corplot, do not
qualify, and will not (easily) work with lattice.

You might find the ?panel.points manual page helpful.

-Deepayan