[mapserver-users] mapcache tileset with multiple grids - set-up of custom grid

[karsten]

Hi All,
 
I set-up mapcache on an Ubuntu 16 LTS machine and got it working correctly.
I have seeded a tile set of aerials in PseudoMercator (using the
GoogleMapsCompatible grid) and is responding  correctly to  HTTP requests.
 
Now I am adding a second projection t that tiles set (EPSG:25832) and thus
added the entries in the mapcache.xml config file.  I started the seeding of
the new projection for the tile set and am not sure that it is set-up
correctly because at zoom level 11 (seeding levels 11-19) it already
produced (and id not finished yet) a huge amount of tiles (alerady over
120000 and counting !) , while for the GoogleMapsCompatible grid the total
count for zoom level 11-19 is around 52000 or so. 
 
I was expecting about the same number of tiles for the other EPSG:25832 grid
(because I reprojected the exact same bounding box and calculated the 19
resolutions (to tried to match the Google grid) from those . Below is the
configuration file. Would anyone know what might be wrong and how to fix it
?
or why my assumptions are incorrect ?
 
Thanks
Karsten
 
Karsten Vennemann
www.terragis.net
 
 
-------------------------
 
<?xml version="1.0" encoding="UTF-8"?>
<!-- see the accompanying mapcache.xml.sample for a fully commented
configuration file -->
<mapcache> 
   <metadata>
      <title>Terragis Mechernich Mapcache Service</title>
      <abstract>Luftbilder fuer Mechernich</abstract>
   </metadata> 
   <cache name="disk" type="disk">
      <base>/var/www/mapdata/gisme/cache</base>
      <!--<symlink_blank/>-->
   </cache>
 
   <source name="luftbilder_mech" type="wms">
      <getmap>
         <params>
            <FORMAT>image/png</FORMAT>
            <LAYERS>luftbilder_mech</LAYERS>
            <MAP>/var/www/mapdata/gisme/luftbilder.map</MAP>          
         </params>
      </getmap>
      
      <http>
         <url>http://xyz.net/cgi-bin/mapserv</url>
      </http>
   </source>
 
   <source name="alkis_mech" type="wms">
      <getmap>
         <params>
            <FORMAT>image/png</FORMAT>
            <LAYERS>fg,gg,gff,lfn,lff,pff,shape_gff</LAYERS>
            <MAP>/var/www/mapdata/gisme/alkis_mechernich_server.map</MAP>
         </params>
      </getmap>
 
      <http>
         <url>http://xyz.net/cgi-bin/mapserv</url>
      </http>
   </source>
 
   <grid name="GK_Mech">
      <metadata>
         <title>MechernichArea</title>
      </metadata>
      <extent>325000 5599000 343000 5615000</extent>
      <srs>EPSG:25832</srs>
      <units>m</units>
      <size>256 256</size>
      <resolutions>17.578125 8.7890625 4.39453125 2.197265625 1.098632813
0.549316406 0.274658203 0.137329102 0.068664551 0.034332275 0.017166138
0.008583069 0.004291534 0.002145767 0.001072884 0.000536442 0.000268221
0.00013411 6.70552E-05</resolutions>
   </grid>
 
    <tileset name="alkis_mech_tiles">
      <metadata>
         <title>Flurstuecke und Gebaeude</title>
         <abstract>Flurstuecke und Gebaeude Mechernich</abstract>
      </metadata>
      <source>alkis_mech</source>
      <cache>disk</cache>
      <grid restricted_extent="727077.513504722 6536256.08499261
754566.10585149 6562363.18993406">GoogleMapsCompatible</grid>
      <grid restricted_extent="325000 5599000 343000 5615000">GK_Mech</grid>
      <format>PNG</format>
      <metatile>5 5</metatile>
      <metabuffer>10</metabuffer>
      <expires>3600</expires>
   </tileset>
   
   <tileset name="luftbilder_mech_tiles"> 
      <metadata>
         <title>Luftbilder Mechernich</title>
         <abstract>Luftbilder Mechernich</abstract>
      </metadata>
      <source>luftbilder_mech</source>
      <cache>disk</cache> 
      <grid restricted_extent="727077.513504722 6536256.08499261
754566.10585149 6562363.18993406">GoogleMapsCompatible</grid> 
      <grid restricted_extent="325000 5599000 343000 5615000">GK_Mech</grid>

      <format>PNG</format>
      <metatile>5 5</metatile>
      <metabuffer>10</metabuffer>
      <expires>3600</expires>
   </tileset>
 
   <default_format>PNG</default_format>
 
   <service type="wms" enabled="true">
      <full_wms>assemble</full_wms>
      <resample_mode>bilinear</resample_mode>
      <format>PNG</format>
      <maxsize>4096</maxsize>
   </service>
   <errors>report</errors>
   <lock_dir>/var/www/mapdata/gisme/cache</lock_dir>
</mapcache>


 

 
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