LSU AgCenter
Noble Guedon knows the equipment he uses on his Concordia Parish farm documents a lot of information — from which crop varieties he planted to how much they yielded at harvesttime to how fast the tractor was being driven.
So when his tractor generated a map speckled with red, indicating low yields, he was certain he could figure out the reason by consulting some of the other data that had been recorded. As it turned out, those red spots lined up almost exactly with low areas marked on map made from elevation data.