On 2/25/2011 1:07 PM, Eric Wolf wrote:
> What I'm trying to do is look at changes to the USGS GNIS data in OSM.
> I want to convert node data for the US (probably just the lower 48
> states) into a format that I can work on in ArcGIS. I want to have
> access to historical data.
Check into starting with the North America extract from Cloudmade:
http://downloads.cloudmade.com/north_america/united_states
Also, adding to What Ian said -
- In many cases, I remove xyz(historical) since the feature no longer
exists OSM doesn't have a good way to represent historical data. That
doesn't mean that the original GNIS data was invalid.
- In a number of cases where I created a polygon, I didn't copy the
original GNIS tags when I deleted the node. That was before I realized
the value of the tags for 2-way data exchange.
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