... INRE: http://bit.ly/2IGkgoj
> Nobody proposed ban on mapping things far away from your place of residence. > That's an amazing image, thanks Michael. Hmmm ... it's not a really a bona fide 'map', per se,it's really just a silly snarky sarcastic cartoon based on narrow assumptions and a highly suspect data model - inspired by my personal knee jerk reaction to other community members perfectly justifiable philosophies of what OSM 'is'. > I take it that's the home location of all OSM contributors? Ummm ... No, I stated a hypothetical 'What if' scenario: " If everyone on Earth joined OSM ...", so the 'locations' are based on the entire global population derived from:*"*Center for International Earth Science Information Network - CIESIN - Columbia University. 2016. Gridded Population of the World, Version 4 (GPWv4): Population Density. Palisades, NY: NASA Socioeconomic Data and Applications Center (SEDAC). http://dx.doi.org/10.7927/H4NP22DQ that I use frequently. I also do time space / mapping, so for the second 'constraint', '...and limited their mapping to their own local knowledge', from my knowledge of Torsten Hägerstrand's ( et. al. ) framework of time / space trajectories of individual humans in the environment, I made S.W.A.G. to get a 'home range' of our set of global mappers. ( https://www.spektrum.de/lexika/images/geogr/fff59_w.jpg ). I then made a mad leap to a conclusion that this 'range' was approximately the same as the grid size. ( maybe not so mad, there is a vast literature around this: http://meipokwan.org/Gallery/STPaths.htm ... and some folks have even extended the model into 'virtual spaces' like WoW ). I then sampled some area like the middle of the Sahara, Siberia, Yukon Territory to get a lower bound ( nobody lives here ) and did a blunt overly simplified binary classification, and used this as a mask to punch out the OSM world map. The projection used is psychological, not geographical ( https://en.wikipedia.org/wiki/Psychological_projection ). > ... also a bit surprised that Australia & NZ have dropped back into the Ocean - I thought there were a few more of us than that? .. See http://worldpopulationreview.com/countries/countries-by-density/ Australia is 225 ( out of 230 ) and NZ is 198. It's actually even more dramatic than this, the Australian Census even has a special distinction for remote areas. It's also an artifact of the population dataset in relation to the resolution of the final graphic. If you are feeling left out, I can adjust that single pixel value. > (cc'ed to AU list for interest's sake :-)) Please tell them this wasn't serious, I don't want to get kicked out of the union. > Nice and funny illustration of OSM problems with global and remote natural areas. How did you create it? Thank you, and see above. A little used GIS tool called InkScape ( perfectly good for doing raster analysis, most 'art' tools ( like 'burning', etc. ) are equivalent to some GIS raster math. > Nobody proposed ban on mapping > things far away from your place of residence. Embedded in Hägerstrand( et. al. ) is that notion of what is 'near' and 'far' for an individual and their experiences. I can look out an airplane window and make a pretty good guess what state I'm over by the road network ( http://www.legallandconverter.com/images/RSS1.jpg ), but while my neighbor gets lost walking to the store - but he can tell you every landmark in his online games. We're all different. > That would probably only add to this picture some spots (remote settlements and touristic attractions) and thin lines (along routes).And probably only spots, if single day would be the limit. You hit the nail on the head. Humans have just so much attentional bandwidth. > OSM started as a very local enterprise, but the world is much wider, so we should rethink how to deal with them, because the world is not gonna shrink... https://www.newscientist.com/article/dn27875-earths-shrinking-crust-could-leave-us-living-on-a-water-world/ ... but you do have a point, there. :-) Michael Patrick Geographer
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
