I started doing a "checklist" of common features you might find around towns. It's not much of a techniques page yet, more hints on what to look out for when mapping a town.
http://wiki.openstreetmap.org/index.php/Town_mapping pages like that might be useful as a cheat-sheet for common tags in various situations (e.g. another one for country mapping) On Sun, Mar 23, 2008 at 3:23 PM, Chris Hill <[EMAIL PROTECTED]> wrote: > I have tried to draw large buildings by walking around them. This has > problems due to access and problems due to losing the GPS signal in the > signal shadow (canyoning). If you repeat this on different days the average > sometimes helps but the building has to be large to not be swamped by the > GPS inaccuracy - maybe Galileo will help in 4 or five years' time. > > I have also drawn a large, prominent warehouse by standing in line with a > side, standing back many hundred metres and marking the point, repeating > this at both ends of the each side (for a rectangular building you get 8 > points in total) you can then join these up in JOSM as guide lines, drawing > the building where the lines cross and delete the guidelines - you need to > load the GPX file directly into JOSM to see the waypoints. This is also > crude for a building, but for a large area that you can't gain full access > to (such as a large industrial area) it can help. Lots and lots of photos > help a lot too. > > The best way overall is to trace the aerial photos and probably the only > way for buildings with a complex shape, but in the area I'm interested in > Yahoo! are low-res and not much use for fine detail. > > > cheers, Chris > > ----- Original Message ---- > > From: Lars Aronsson <[EMAIL PROTECTED]> > > To: [email protected] > > Sent: Sunday, 23 March, 2008 10:47:10 AM > > Subject: [OSM-talk] How to perfect the map > > > [snip] > > > All the wiki pages on "map features" describe how to add > > denomination to an amenity=place_of_worship, but don't say when > > a church should be drawn as a dot amenity or when the outlines of > > the building (and surrounding park) should be mapped in detail. I > > think we should make wiki pages that start with real world objects > > instead of tags. > > > > Is there any written description for that kind of detailed > > mapping? > > > > Do you print out the OpenStreetMap at zoom=17 of a few city blocks > > and bring it with you to check all the details? Or can you run > > JOSM on a PDA while walking around? > > > > > > > > > ___________________________________________________________ > Rise to the challenge for Sport Relief with Yahoo! For Good > > http://uk.promotions.yahoo.com/forgood/ > > > _______________________________________________ > talk mailing list > [email protected] > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk >
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