On Tue, Jul 5, 2011 at 10:15 AM, Donnacha Nelan <[email protected]
> wrote:
> Hi list,
>
>
>
> I have encountered a problem with a difference in the quality of display of
> a raster depending on whether the layer is in a LayerGroup or not.
>
> On its own, i.e. not in a layer group, the image displayed is of good
> quality with nice smooth text, lines etc.
>
> In the LayerGroup the image is of bad quality with text and lines ‘chunky’.
>
> I have set the interpolation method for the layer and for the wms service
> to be ‘bicubic’
>
> It is as if the interpolation method is not being used when the layer is in
> a LayerGroup. Is this possible? Is there a way of setting the interpolation
> method for a LayerGroup raster layer?
>
Starting with GeoServer 2.1.1 the code path to ask for a raster layer stand
alone, and ask for a group of layers have been
completely separated.
This has been done for performance and scalability concerns, when a single
raster is asked GeoServer can work in "image server" mode
instead of "map server" mode, the former is definitely faster.
I guess we made improvements to the image server mode that were not ported
back to the classic map server mode.
Do you have an example data set with styles that we can use to reproduce the
issue?
By your description it seems the raster is not the typical aerial/satellite
imagery, nor scientific data, but sounds more like
a scanned map?
Cheers
Andrea
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