[Mapserver-users] nested tiles

Stephen Woodbridge woodbri at swoodbridge.com
Fri May 28 09:50:45 EDT 2004


I question that you really need this structure. At topozone.com, there 
are 250,000 tiff raster files organized into about 20 UTM zones with one 
layer per zone. Each DOQQ raster was either 50MB or 150MB (mono or 
color). The files were grouped into one degree by one degree coverage 
directories for the whole US, HI, AK, and PR.

This was very easy to manage because a you could add, delete or change 
files anytime and use a simple perl script to regenerate the 
tileindexes. This scheme is serving nearly 20 TB of raster data.

Ed McNierney might have more to add on this.

-Steve W.

Jan Hartmann wrote:

> Hi,
> Is it possible to have nested tile-indexes for raster applications, i.e. 
> one master index which refers to several sub-indexes, which in their 
> turn refer to the underlying raster files? I think I have read something 
> like this in the list, but I can't find it. I'm trying to make a design 
> for displaying 17000 historical cadastral maps, each 4000*4000 pixels, 
> covering the whole of the Netherlands. At a later stage I would like to 
> do the same for the original 10000*10000 scans. Any other suggestions on 
> how to organise this would be very welcome too.
> Jan
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