[Talk-us] Grand Junction + TIGER 2010

[Josh Doe]

On Sun, Jun 26, 2011 at 10:45 AM, Mike N <niceman at att.net> wrote:

> On 6/26/2011 10:01 AM, Nick Hocking wrote:
>
>> What would be really usefull is to have OSM in one of the geofabrik
>> compare windows and TIGER 2010 in the other. Is there an easy way to
>> achieve this?
>>
>
>  Until Ian gets the comparison server up, you can try setting the
> "Inactive" layer color in JOSM to a bright color.    Download an area of
> interest.   Open the .OSM file - it will come in as a new layer.   Then
> Activate the original "Data Layer 1".   Now the original TIGER roads will
> overlay the new TIGER data - partially obscuring it.   New roads from a new
> subdivision will stand out easily, as there will be no overlaying road.
> Dave Hansen's original example illustrates this:
>
> http://daveh.dev.**openstreetmap.org/portland/**josm-ping.png<http://daveh.dev.openstreetmap.org/portland/josm-ping.png>
>
>  From the .OSM layer, you can select new roads, then "Merge Selection" to
> put them into the new working map layer.
>
>  In my case, I also created a county-wide extract with Osmosis to be able
> to do a massive overlay comparison without having to download it all by API.


Related to this, I've just made a wiki page to bring together all methods
and implementations of comparing external datasets with OSM. Please take a
look at it and add anything that might be missing:
http://wiki.openstreetmap.org/wiki/Comparing_OSM_with_other_datasets

I'd like to see a toolset developed to produce ITO-style analysis for any
set of data, whether TIGER, state, or county data.

-Josh
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