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
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.
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