[R] us zipcode data map

[Tom Short]

> >My new task (which I have not investigated yet) is to see if facilities
> >exist in R to turn the X11 device into an HTML document with an
> >html-map .... or into a PDF with hyperlinks.

To create an HTML imagemap, see B. Rowlingson's imagemap package at:

http://www.maths.lancs.ac.uk/Software/Imagemap/

To see an online demo of an interactive map generated with this package in Rpad,
see:

http://www.rpad.org/Rpad/mapdemo.Rpad 

- Tom