[Mapserver-users] Multiple counties in a template file !!!

[Stephen Woodbridge]

Dharani,

A tileindex is a collection of files that all have the same structure 
and could all be concatenated together but aren't because it is easier 
to work with and manage a bunch of smaller files. The other advantage is 
that there are some significant performance improvements that can be had 
by working with data organized using tileindexes.

Here is what I do for shapefiles. Say you have a layer called 
streets.shp and you have 10 counties each with its streets.shp file in a 
separate directory like:

data/county01/streets.shp
data/county02/streets.shp
...
data/county09/streets.shp
data/county10/streets.shp

find ./data/ -name streets.shp -print > streets.in
tile4ms streets.in streets-tile
find . -name "*.shp" -exec shptree {} \;

This will find all your streets.shp files and create a tileindex called 
streets-tile.shp and also find all shapefiles and create a spatial index 
for them.

Now in your mapfile

LAYER
NAME "streets"
TILEINDEX "streets-tile.shp"
...
END

You need to read up on this in the mapfile reference and the utilities 
doc pages on the mapserver website.

You can see all of the US Tiger data at http://imaptools.com/tiger/

-Steve

Dharani Babu wrote:

> 
> hi Steve
> Thanks . That has set me on . though yet to know what tileindex is . I 
> appreciate the way the map server members helping each other out- have 
> seen forums which hardly reply to queries . i will update u of my 
> progress soon.
> with regards and thanks
> dharani babu s
> 
> 
>> From: woodbri at swoodbridge.com
>> Reply-To: woodbri at swoodbridge.com
>> To: "Dharani Babu" <dharanibabus at hotmail.com>,              Tyler 
>> Mitchell <TMitchell at lignum.com>
>> CC: mapserver-users at lists.gis.umn.edu
>> Subject: Re: [Mapserver-users] Multiple counties in a template file !!!
>> Date: Thu, 01 Apr 2004 14:51:59 -0500
>>
>> But if you have all the data in the US it is 3300 counties plus or
>> minus and you probably don't want 3300 layers for each attribute.
>> What you want to do is use a tileindex. This will allow you to treat
>> all roads files in all 3300 counties as a single layer.
>>
>> -Steve W.
>>
>> On 1 Apr 2004 at 8:53, Tyler Mitchell wrote:
>>
>> > I assume you mean you have multiple TIGER files and want to have them
>> > appended into one map, right?
>> > If you have all the data for multiple counties, then you just add 
>> each one
>> > as a layer and it will make them work seamlessly together.
>> >
>> > mapserver-users-admin at lists.gis.umn.edu wrote on 04/01/2004 06:16:02 
>> AM:
>> >
>> > > Hi all
>> > >    Could any of you advise me how I could display multiple 
>> counties( or
>> > a
>> > > full state)  in the same map ?. After displaying them I want to 
>> have the
>> >
>> > > same set of operations like zooming in /out/pan as we have with 
>> single
>> > > county maps .
>> > > With regards and thanks in advance
>> > > dharani babu s
>> > >
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