[mapserver-users] mapcache - multiple resolutions for the same grid

[Travis Kirstine]

Thomas,

Thanks for your reply.  The addition of the <grid minzoom="0"
maxzoom="19">...</grid> to the config does address some of the issues, the
tileset is advertised as only having 19 zoom levels in the getcapabilties
for the TMS.  However it does not perform the same as having a <grid>
configured with 19 (20) <resolutions>  when accessing the service using a
WMS.  The tileset with <grid minzoom="0" maxzoom="19"> will return a 404
with a blank tile when making a GetMap request beyond level 19, the grid
configured with only 20 resolutions (zoom level 0-19) will return a valid
image. -- I think : )

Regards


On 4 March 2013 11:19, thomas bonfort <thomas.bonfort at gmail.com> wrote:

> <tileset>
>   <grid minzoom="0" maxzoom="19">...</grid>
> </tileset>
>
> should do the trick...
>
> On 4 March 2013 17:14, Travis Kirstine <traviskirstine at gmail.com> wrote:
> > I have set up mapcache with a generic grid for all my caches.  The grid
> has
> > resolutions defined for zoom levels 0-21, however depending on the
> > resolution of my source data the tileset may only be seeded to level 19.
> > The tileset no longer has the ability to connect to the source.  As a
> result
> > blank images are displayed the when a client using the mapcache WMS
> zooms in
> > beyond the max resolution.  Is there a way to address this without
> creating
> > additional grids?
> >
> >
> >    <!-- Google Grid for >=10cm Levels 0-21 -->
> >    <grid name="gmaps">
> >       <metadata>
> >          <title>GoogleMapsCompatible</title>
> >
> >
> <WellKnownScaleSet>urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible</WellKnownScaleSet>
> >       </metadata>
> >       <extent>-20037508.3427892480 -20037508.3427892480
> 20037508.3427892480
> > 20037508.3427892480</extent>
> >       <srs>EPSG:3857</srs>
> >       <srsalias>EPSG:900913</srsalias>
> >       <units>m</units>
> >       <size>256 256</size>
> >       <resolutions>156543.0339280410 78271.51696402048 39135.75848201023
> > 19567.87924100512 9783.939620502561 4891.969810251280 2445.984905125640
> > 1222.992452562820 611.4962262814100 305.7481131407048 152.8740565703525
> > 76.43702828517624 38.21851414258813 19.10925707129406 9.554628535647032
> > 4.777314267823516 2.388657133911758 1.194328566955879 0.5971642834779395
> > 0.29858214173896975 0.149291070869484875
> 0.0746455354347424375</resolutions>
> >    </grid>
> >
> >  <tileset name="0237DURH_cache">
> >      <!--source>0237DURH</source-->
> >      <cache>disk</cache>
> >      <grid restricted_extent="-8831574.381510 5432633.752429
> -8731299.465116
> > 5547099.028228">gmaps</grid>
> >      <format>mixed</format>
> >      <metatile>4 4</metatile>
> >      <metabuffer>0</metabuffer>
> >    </tileset>
> >
> > Thanks!
> >
> >
> >
> > _______________________________________________
> > mapserver-users mailing list
> > mapserver-users at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >
>
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