Tom Russo wrote:
On Tue, Jul 24, 2007 at 10:09:28PM -0600, we recorded a bogon-computron collision of
the <[EMAIL PROTECTED]> flavor, containing:
<snip>
It's just that they're so awfully slow to load from my hard drive -- I
would have thought they'd almost HAVE to be faster than loading a map from
the internet, but they actually take maybe 4 or 5 times as much time.
It is because of the essential difference between them.
The on-line maps are being downloaded as rendered images. The shapefiles are
being rendered by Xastir, and each line is being read in, examined, drawn
and labeled.
For big shapefiles such as county-wide TIGER/Line data this can be very slow.
Rtree helps it somewhat (by generating a spatial index so it doesn't have to
do very slow linear searches through the data), but there's just so much
you can speed it up without doing a lot of special preparation on the data
files (some folks here have done that).
Is there some way to simply drop the amount of detail as I zoom out
to a larger area? I sure don't need to see every little dirt road and
cow path when I'm looking at an entire state.
Tnx es 7 3
Earl
P.S. QSL cards for my countries #100 and 101 arrived a couple of days
ago. Woo woooooooooooo!!!!!!!!!!!
--
KD5XB -- Earl Needham
Clovis, New Mexico DM84jk
http://groups.yahoo.com/group/cw_bugs
ZUT
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