This doesn't have anything to do with Analytic Journalism per se, but
while flying from Cairo to Dubai recently I looked out the window at
39,000 feet somewhere over the sands of central Saudi Arabia.  What to
my wondering eyes did appear, but an expanse of pie charts. 

Of
course these are irrigated crops.  A friend in Dubai, who grew up in
Saudi Arabia, said the reason they are not all completely filled
circles is because some growers don't have enough money (yet) to buy
the equipment necessary to complete the 360-degree irrigation.