Re: [Geoserver-users] Huge raster files support ?

[<chr...@nv...>]

Quoting Pasta Bolognese <pas...@gm...>:

> Hi Users,
>
> I'm planning to store a lot of raster data into some database. I'm
> studing the possibility of using PostGIS, Oracle GeoRaster... and now
> I've found GeoServer....

>
> 1 ) can GeoServer manage tens of raster files (from ArcServer) each of
> 16GB ? so can it manage for example 50 raster of that size ?

AFAIK, ARCSde breaks your raster into tiles/pyramids. The 16 gb are  
not stored as whole BLOB. Geoserver uses the same mechanism. The  
geoserver(geotools) plugin was created during a migration from ARCSde  
to geoserver.

One critical issue is the preparation of your tiles (use color table,  
generate pyramids, create tiles 512x512). Take a look at  
gdal_retily.py and rgb2pct.py

The second issue is your db design (indices, spatial extension used,...)

>
> 2) and can I do a look up (getValueOfXY(CoordinateSystem)) using my
> coordinate system in a acceptable response time (under 0.5 seconds) ?
>
IMO, this is a pure calculation and does not need fetching any raster data.

Geoserver/geotools offer your requests like

Param: pixelDIM and SpatialExtent
Result: the image.

If you need more than that, you could use oracle georaster, geoserver  
is capable of handling oracle georaster objects.

Since I am in holidays I cannot support you with good response times,  
after 25 th of July we could start an in depth discussion, if you like.


> Thanks !
>
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