[Xastir-dev] Optimizing Shapefile drawing
Curt, WE7U
archer at eskimo.com
Thu Dec 16 14:28:12 EST 2004
On Thu, 16 Dec 2004, Tom Russo wrote:
> The technique would be applicable to any layer for which sub-rectangles
> can be extracted. For shapefiles that's trivial, because each point, polyline,
> and polygon has its bounding box stored with the file. For others it might
> require that we compute one while generating the rtree.
At least it's an easy calculation, assuming that the lat/long values
are in some easily digestible format and datum.
--
Curt, WE7U. APRS Client Comparisons: http://www.eskimo.com/~archer
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