VS: [mapserver-users] Tileindex and drawing order of overlapping images

[Rahkonen Jukka]

Frank Warmerdam wrote:
 
Rahkonen Jukka wrote:
>> Hi,
>>
>> If have overlapping images from different years. Can I control in some
>> easy and reliable way that the new images will get drawn on top, for
>> example by writing tileindex shapefiles so that new images have bigger
>> fid values?

>Jukka,

> The order of images in the tileindex shapefile will be the order
> they are drawn - if - you do not build a spatial index on the
> shapefile.  If you have a spatial index the drawing order
> becomes essentially random, and of course if you have a lot
> of images a spatial index is quite valuable.

Damn, I need spatial index for sure. Any idea about how to get them both? Perhaps taking tile index with ordered query from Oracle, PostGIS or even SpatiaLite?

-Jukka-



> Best regards,
> -- 
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> I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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