On Wed, Mar 05, 2014 at 08:44:54PM +0100, Christoph Hormann wrote: > On Wednesday 05 March 2014, Richard Z. wrote: > > > > oh yes. You can say the same about a forrest and almost anything in > > the real world. > > No, continuously changing properties exist for many features including > for example the transit from wood to grassland but climate zones in > addition have the problem of only being defined in the long term > average. You will be able to determine the density of trees growing in > some area at any single point of time without much effort and can use > this as a basis to verifiably decide if this is a wood or not. But you > will need to measure the temperature for many years to approximately > determine the long term average. Precipitation is even trickier.
despite beeing sometimes tricky I still consider it pretty important to know that a certain area is eg part of the tundra climate, permafrost or monsoon. And when hiking on Kauai I would pretty sure want to have this information handy: http://www.fs.fed.us/psw/topics/ecosystem_processes/tropical/restoration/lifezone/hawaii/Kauai.jpg http://3.bp.blogspot.com/-D7UQYrsMu24/UVuvQS7In1I/AAAAAAAAPp4/TNzHyYeWlZw/s1600/kauai-smaller-map.gif - everything from rain forrest to desert within few miles. Richard _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk