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drwelby's photostream
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Improvisation on the dairy
Another bike portrait..
SBN index maxed out (view full size)
We fed a uniform grid of 250K features into Arcview to generate this index file. This maxes out the...
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Uploaded on Oct 10, 2011
Shapefile spatial indexing animation (cities)
(View original to see animation) It's not as obvious in this data set, but the skinny little bins give...
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Uploaded on Oct 6, 2011
Shapefile spatial index bins animated (blockgroups)
This animation shows how the bins are built. (View original to watch it animate) Looking at the whole...
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Uploaded on Oct 6, 2011
More shapefile spatial indexing (blockgroups)
There's that Z-order fingerprint all over the place again. Or maybe it's really a quadtree? Notice that...
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Uploaded on Oct 6, 2011
Shapefile spatial indexing (cities)
Looking at the order that ArcGIS bins feature groups, it sure looks like there's a Z-order curve in...
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Uploaded on Oct 6, 2011
Team Trail Chute
The chute at the end of Team Trail at Potter's Pasture in Brady, Nebraska. As the name suggests, Potter's...
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Uploaded on Sep 2, 2011
In the chute
Big Hill @ Potter's
Looks like Bolinas Ridge. Just pretend the ocean is behind that ridge and you'll never know you're in Nebraska.
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Uploaded on Sep 1, 2011
#3 (RIP)
Finally dug up a picture of #3, which cracked last year after lots and lots of off-road miles. Oxy-gas welded and painted with woodstove paint.
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Uploaded on Jul 18, 2011
International Cycle Sport
Paramount
Bike Racks
QR Codes
Nobles Emigrant Trail
Bikes
Geo
Framebuilding
