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

[Stephen Woodbridge]

On 10/13/2015 4:15 PM, Robert Sanson 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,

Regarding labels you can set a metabuffer value in both the mapcache.xml 
and the mapfile.

   <tileset name="osm-curvature">
     <source>osm-curvature</source>
     <cache>disk</cache>
     <grid>WGS84</grid>
     <grid>g</grid>
     <format>PNGQ_FAST</format>
     <metatile>5 5</metatile>
     <!-- metabuffer must be the abs() of what is in the mapfile -->
     <metabuffer>20</metabuffer>        <!-- THIS -->
     <expires>3600</expires>
   </tileset>

and in the mapfile:

     WEB
         METADATA
             labelcache_map_edge_buffer "-20"   ## <!-- THIS -->
             "ows_title"     "OSMCurvature"
             ...
         END
     END

-Steve W

> 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 _______________________________________________
>> mapserver-users mailing list mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
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