Dotplot with Dates on Horizontal Axis

[Jonathan.F.Binkley@aero.org]

What is the most straightforward way to create a dotplot when the
independent variable (what is plotted on the horizontal axis) is a date? In
the trellis function dotplot, the independent variable most be numeric.
There doesn't appear to be any plotting methods for objects of class
"timeSeries" that are applicable in this case. A simplified version of my
dataset is:
Event          Process
3/6/1998  A
8/21/1998 B
6/26/1999 A
.         .
.         .
.         .
2/19/2001 B

Should I modify dotplot so that dotplot.mod(Process ~ Event) does the
trick?

Thanks,

Jon Binkley
The Aerospace Corp.