could someone clear this up for me please. i remember reading an article not long ago on the web about the problems associated with buffering points on a globe due to the fact that a globe uses angles instead of cartesian coordinates on a plane. the implication was that the usual buffer visualization of concentric rings was totally false when using large areas...ie 500km+.
i just saw this graphic on a bbc site, and wanted to find out if this representation is correct or not.
scroll down for the graphic.
is this graphic accurate?