aggregate	demo aggregating ST irregular points over an STF
edc			spacetime demo script for EDC workshop, Mar 17-18 2011
sos4R		demo that builds onto a sos4R demo
CW			demo doing some examples from the Cressie & Wikle book (ch 3)
CressieWikle	demo that reads the data from the Cressie & Wikle book.
gvis		some googleVis graphs using spacetime data
