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

[Frank Warmerdam]

On Fri, Aug 14, 2009 at 7:37 AM, Rahkonen
Jukka<Jukka.Rahkonen at mmmtike.fi> 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.

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