[Mapserver-users] Indexing of Shapefiles

[Darren.Cope at statcan.ca]

Thanks Steve Woodbridge (and Stephen Clark as well) for your prompt
answer(s)!

Darren


-----Original Message-----
From: woodbri at swoodbridge.com [mailto:woodbri at swoodbridge.com] 
Sent: March 5, 2004 10:20 AM
To: mapserver-users at lists.gis.umn.edu; Darren.Cope at statcan.ca
Subject: Re: [Mapserver-users] Indexing of Shapefiles


Darren,

You should build spatial indexes for all your shapefiles. this speeds 
up query and display.

find data_dir -name "*.shp" -exec shptree {} \;

should improve things. It assumes you are on Linux/Unix and the you 
have shptree in the path. shptree creates the mapserver spatial index 
*.qix and can be found in your mapserver build directory.

-Steve W.

On 5 Mar 2004 at 9:38, Darren.Cope at statcan.ca wrote:

> Hi all,
> 
> I have several very large shapefiles that I wish to display.  
> Everything works fine, except that rending and querying take a _long_ 
> time.  Does MapServer work with attribute indexes on shapefiles to 
> speed up queries? Spatial indexes to speed up queries?  I have read 
> about the TILEINDEX but am not sure how this applies to a single large 
> shapefile.
> 
> Any help would be appreciated!
> 
> Thanks,
> 
> Darren Cope
> Statistics Canada/Statistique Canada
> Geography Division/Division de la géographie
> Jean Talon 3D5
> Ottawa, Canada
> (613) 951-6461
> 
>