[R] pie chart in lattice - trellis class

[Patrick Giraudoux]

Dear all,

After going through the Lattice doc and R-help list and google, I got 
the feeling that there is no function in lattice or other package to 
compute a pie chart object  of class "trellis". Although pie charts are 
obviously not considered optimal even in the pie() doc ;-) ,  pie chart 
trellis objects would be easy positioned e.g. over a map drawn with the 
grids package.

Can anybody confirm this absence or indicate a package/function able to 
draw a pie chart  object of class trellis?

Thanks in advance,

Patrick