http://help.openstreetmap.org/questions/2044/digitizing-buildings-in-potlatch
The key is that it's a different tool (like most GIS desktop). It's a line that has the same start/end point and then a proper tag to indicate what it is. You can see in downloads of OSM data that buildings etc get put into a polygon layer separate from the line layers. If you have more questions try the OSM mailing lists. Thanks, Alex On 07/29/2011 02:17 PM, Nitin Gadia wrote: > awesome! thanks! > > Are there any other projects that use polygons that you're aware of?? > > Is there any word about GeoMoose becoming an online open community like > openstreetmap or onegeology? > > Looks like this is the project I need to join in development. I did a demo > of GeoMoose, it looks pretty good. It needs more functionality though. A > timeline would be nice. Also, something that would join boundaries of > polygons. Here, I'm envisioning that a user can draw a polygon and some > lines could automatically be drawn along a line, like a river or a > coastline, or another border. This would streamline drawing tremendously. > > > Someone also told me you can do polygons in openstreetmap (parking lots, > buildings, etc.). Does anyone know how to do this? I can't seem to be able > to figure it out... > > > Nitin > > > > On Fri, Jul 29, 2011 at 3:54 PM, Bob Basques > <bob.basq...@ci.stpaul.mn.us>wrote: > >> Nitin, >> >> Openlayers can build polygons on the map. >> >> GeoMoose, which is built on top of OpenLayers can also do this. >> >> In both cases you will need to build out a service to store the created >> polygons. >> >> bobb >> >> >> >> >>>>> Nitin Gadia <nitty...@gmail.com> wrote: >> >> Please help!! >> >> >> Does anyone know an open online mapping platform like openstreetmap that >> does polygons (OSM only does lines)? >> >> Basically, I'm envisioning something where someone can add polygons such as >> historical nations, and then be able to animate them. I should be able to >> type in, say, "1900" and see the way the world was then. I can then edit a >> map, changing and adding polygons, and their colors and metadata. I should >> also be able to view areas by, say, population density and other statistics. >> >> The closest thing I've found is "click2map", which is not opensource. >> Something needs to be created just like it. Try it out, and create a >> polygon: >> http://www.click2map.com/free_map_editor >> >> >> >> >> I want to help create an open historical map of the world. Check out the >> work I've done so far: >> http://www.thenittygritty.org/intheworks.html >> >> Also, check this out: >> http://www.youtube.com/watch?v=oxrXiO0zcVw&feature=related >> >> >> >> >> If this is not available, I will do everything I can to help build it! >> >> >> Thanks, >> Nitin >> >> _______________________________________________ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss