Trail On Cannan Heights
Great Circle Calculations Are Not Your Friend
Making your computer do math like this, even with a good spatial index, can make things very slow. Stupid me!
I couldn’t figure out for the longest time why the PostGIS database I was using was so slow, after inserting a proper GIST index on it. But then when I saw the projection was EPSG: 4326, I said, that’s why. All that trigonometry even with a math-coprocessor and spatial index is going to be slow as a dog!
Blue Skies
A rare sight these days.
Friday October 12, 2012 — Niagara Falls
Trucker and the UFO Brush Arbor
I was driving on the Jack Murtha Expressway in Western Pennsylvania and this song came on the radio.
Wind Turbines and a Double Wide
