[Mapserver-users] nested tiles

Steve Lime steve.lime at dnr.state.mn.us
Fri May 28 15:11:15 EDT 2004

I think in theory, at least with raster data, ANY layer should usable as
a index as long it contains
polygon features. I know you can use PostGIS or SDE layers as index
layers so...

Give it a try, easy enough to test if you can get the data setup


>>> Stephen Woodbridge <woodbri at swoodbridge.com> 5/28/2004 10:29:34 AM
Jan Hartmann wrote:

> Ed McNierney wrote:
>> Jan -
>> Yes, I agree with Steve - I doubt you need this.  I would recommend
>> create a single tileindex and then be sure to create quadtree index
>> the tileindex by using shptree.

YES, Yes, yes! you should create shptree (*.qix) files for ALL 
shapefiles. Everybody should remember this for all shapefiles as it 
provides a significant performance boost in in 99.99% of the cases.

find /path/to/data -follow -name "*.shp" -exec shptree {} \;

> OK, I'll do that; it's a small country after all. The quadtree is a
> suggestion, perhaps that's what I did read about. Just for the
> *are* nested tiles possible?

Not that I know of. I don't know if the new changes that Steve Lime
to separate off the tileindex into it's own layer might provide 
functionality for such a feature or not.

-Steve W.

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