[Xastir] Rtree

[James Ewen]

Okay, I guess I'm just a pain in the butt...

I finally got around to trying out the rtree option.

It's not on my list of favourites... I find that it slows down the display 
dramatically. Once you've zoomed in and out quite a bit, things speed up a 
little. However, those first couple times take 15-20 times longer to display 
than without rtree. The speed increase once rtree is in place, doesn't make 
much difference for me. It seems that the rtree data clears out of memory 
quite quickly as well.

It could quite possibly be the way I have my shapefile data split up. I cut 
the province up into Maidenhead grid squares, and also pulled the major 
highways out for the whole province.

James

BTW, thanks for the pointer for fixing my GDAL problems, Tom.