[gdal-dev] Determining GDAL WMS download limit?

[Carl Godkin]

Thank you very much.  That's very useful information.  I've started using
the <ZeroBlockHttpCodes> element in our WMS control files.

Thanks,

carl

On Tue, Jul 7, 2015 at 7:26 AM, Even Rouault <even.rouault at spatialys.com>
wrote:

> Le mardi 07 juillet 2015 16:02:11, Carl Godkin a écrit :
> > Hi,
> >
> > I would like to know if there's a way to determine if a GDAL WMS download
> > is going to work or not from the information in the local description
> file.
>
> Carl,
>
> From a quick testing, it seems there are tiles up to zoom level 14 included
> everywhere on the 's' layer (even on oceans). But starting with zoom level
> 15,
> tiles on oceans are missing.
>
> If you use GDAL 1.11 or above, you can avoid failures on missing tiles by
> adding <ZeroBlockHttpCodes>404</ZeroBlockHttpCodes> in the XML file.
>
> Even
>
> --
> Spatialys - Geospatial professional services
> http://www.spatialys.com
>
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