[OSGeo-Discuss] online open source polygon mapping, like OSM?

[Alex Mandel]

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.Basques at 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 <nittyjee at 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
>>
>>