On Tue, Mar 4, 2014 at 9:22 AM, Hans Gregers Petersen <[email protected]>wrote:
> I would suggest that you use GDAL to:
> 1) Make a single VRT of your lib full of ECWs (see
> http://www.gdal.org/gdalbuildvrt.html)
> 2) Add overviews to said VRT, for instance 2 4 8 16 32 64 (depending
> on your usual zooms you might even go as far as 128 or 156) (see
> http://www.gdal.org/gdaladdo.html)
> 3) Load said VRT instead of using an imagemosaic
>
GeoServer cannot load VRT files, not that I know of, at least.
For some reason, at the imageio-ext level, we need to write custom classes
for each new format we want to support (not sure why, I would very much like
to see this limitation removed), and VRT is not one of the formats that
we have in our support list:
https://github.com/geosolutions-it/imageio-ext/tree/master/plugin/gdal
However, it is possible to create reduced resolution versions of the
dataset,
manually setup a pyramid config file, and have GeoServer use that, or
simply register each layer independently, assign a scale range to each via
SLD,
and create a layer group that would more or less act the same way as the
pyramid.
Cheers
Andrea
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