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,
> -- 
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam, [email protected]
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent

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