[OSM-dev] Map files for entire US (for download): use case for JOSM's layers?

[Alex Mauer]

Dave Hansen wrote:
> I'm uploading a test county now (Hood River, OR) so that we can see how
> it renders.  Please don't upload any other bits of this, just yet.  But,
> please download them and take a look at them in JOSM or even render them
> if you can.

What problems should we look for?  And if no problems are found, why not
upload?  At the very worst, it's still better to have some data to start
from (and correct problems) than to have to start from scratch.

It also occurs to me that this would be a great use case for JOSM's new
layers when merging TIGER and OSM info where it already exists: Load the
OSM data; load the imported TIGER data; select a way in the TIGER data;
if JOSM can do this yet, copy or move the way from the TIGER layer to
the OSM layer.  et voila, the TIGER way exists in OSM.

Potential pitfalls: occasions where the copied way crosses an existing
way (potential solution: if there's an existing node on both ways at
some "close enough" range, connect them.  If it turns out to be wrong,
not too big of a deal to fix it in JOSM.

It would also be wonderful if JOSM can select everything with a certain
tag for the copying: I have (almost) no rail whatsoever in my county,
like 200' or so...so little that deleting it and importing the TIGER
data is very feasible.  But even assuming the inter-layer copying (as
above) is doable, can I select "all rail" or do I have to select every
single individual railway way?

-Alex Mauer "hawke"

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