I'm mapping in this area:
http://www.openstreetmap.org/?lat=34.08242&lon=-118.639&zoom=17
Along the north side of the tertiary road (whose name is not rendered, but
is Saddle Peak Road) is a state park polygon (Topanga State Park) imported
from CASIL. In this small segment, the road is approximated with less than
70 nodes, while the park polygon segment alongside uses over 1200. I've
noticed similar "beauty" in other data from this source and others (like
the Bakersfield data mentioned recently on the list).
Should imports make an effort to "un-smooth" such data to some extent, for
the benefit of editing and rendering performance, storage, etc?
I suppose if one really wanted to not lose the detail, some calculation
could be done during import to determine the radius and arc degrees that
were used to create the curves in the first place and then tag those in
some way (in case the day comes when we can feed that to the renderer
instead of approximating curves with lines). Of course, it might make more
sense to get the original curve data in this case instead of
reverse-engineering it.
--
Alan Mintz <alan_mintz+...@earthlink.net>
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