[mapserver-users] Mapcache - optimum format for orthophotos?

[Travis Kirstine]

This is worth a read as well for info on how to optimize your images for
mapserver.

http://mapserver.org/uk/optimization/raster.html





On Wed, Oct 14, 2015 at 6:56 AM, thomas bonfort <thomas.bonfort at gmail.com>
wrote:

> it depends on many factors... large metatiles are more efficient as
> they usually impose less load on the WMS server, but can cause a
> significant delay for the end user if you are populating your cache on
> demand.
> If you're preseeding everything, use large power of 2 metatiles (4x4,
> 8x8,...). If you haven't pre-seeded, use smaller ones, how small
> depends on the experience you want to provide your user if the tile
> isn't already in the cache (2x2, 4x4).
> If you're rendering raster data only, you don't need a metabuffer.
>
> On 13 October 2015 at 22:15, Robert Sanson
> <Robert.Sanson at asurequality.com> wrote:
> > Thanks Thomas. I do not have labels, so would you still recommend
> metatiles for performance reasons? Would you suggest 3 3 or 5 5 for a
> Mapserver WMS backend?
> >
> > <metatile>3 3</metatile>
> >
> > Robert
> >
> > -----Original Message-----
> > From: thomas bonfort [mailto:thomas.bonfort at gmail.com]
> > Sent: Tuesday, 13 October 2015 8:07 p.m.
> > To: Robert Sanson <Robert.Sanson at asurequality.com>
> > Cc: mapserver-users at lists.osgeo.org
> > Subject: Re: [mapserver-users] Mapcache - optimum format for orthophotos?
> >
> > in the vast majority of the cases, you'll want to have mapcache use
> metatiles, be serving PNGs from your WMS server (<format>image/png</format>
> in your mapcache <source>), and storing your tiles as JPG
> (<format>JPG</format> in your <tileset>). If you need to preserve
> transparency on your orthophoto edges, you can choose to store the tiles as
> a"mixed" format instead of pure JPG.
> >
> > --
> > thomas
> >
> > On 12 October 2015 at 22:13, Robert Sanson <
> Robert.Sanson at asurequality.com> wrote:
> >> Hi
> >>
> >> What is the recommended format for serving and storing true colour
> orthophotos via Mapcache if we wish to preserve maximum detail? The source
> data are uncompressed GeoTiffs served as WMS by Mapserver.
> >>
> >> Many thanks,
> >>
> >> Robert Sanson
> >> _______________________________________________
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> >> mapserver-users at lists.osgeo.org
> >> http://lists.osgeo.org/mailman/listinfo/mapserver-users
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>



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