[Xastir] rtree speeds up shapefiles

[Jason Hitesman]

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Tom Russo wrote:

> On Thu, Feb 03, 2005 at 05:11:17PM -0600, we recorded a bogon-computron collision of the <gerry.creager at tamu.edu> flavor, containing:

> I dunno.  Is everyone who uses it happy?  Is it a memory pig (that was
> my original concern)?  Is the index expiration interval of 1 hour good
> enough?  Does it actually compile for every platform?  If everyone who
> uses it loves it, and nobody finds it core dumping at random
> intervals, then I'm all for changing the default.  But I don't feel I've
> exhaustively checked the questions above.

I've tried it and I'm neutral on it.  Nothing bad to say but nothing
that has impressed me either.  I've always been dissapointed at how long
shapefiles take to render so I tend to stick with palm maps for most
stuff then turn on my shapefiles when I won't be moving the view for
awhile.  It could be that I live in a fairly large county (Yuma, AZ) and
the neighboring SoCal counties are fairly sizeable as well - so when I
turn on those shapefiles things slow to a crawl.

With the rtree code it seems a little quicker with zoom levels <100 but
I normally keep my zoom between 100 and 300 and in those ranges I don't
notice any difference in speed.

Maybe I'm missing something about how to enable rtree...it shows "yes"
for rtree after I run ./configure so I believe it's there and working.

So no problems with it or complaints...just still not fast enough for to
make it tolerable for me to leave my shapefiles on all the time.

- ---
Jason Hitesman N8INJ
jason at hitesman.com
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