[mapserver-users] Tips on generating tiles from mapserver

[Adrian Popa]

Thank you Lars,
I will follow your approach. I hope I won't run out of disk space :)


Lars Lingner wrote:
> Adrian Popa schrieb:
>   
>> Hello everyone,
>>
>> I have some mapserver layers that I would like to generate into tiles
>> (because the content doesn't change much). I would like to find out the
>> following:
>> 1) a link to a tutorial or help on how to do this (which tools to use)
>>     
>
> You could use TileCache. It comes with an tilecache_seed.py script which
> generates the tiles queering MapServer.
>
> A sample config can look like:
>
> - MapServer layer
>
> LAYER
>     TYPE POLYGON
>     STATUS ON
>     NAME "landuse"
>     CONNECTIONTYPE POSTGIS
>     CONNECTION "host=<host> port=<port> dbname=<dbname> user=<dbuser>
> password=<dbpasswd>"
>     DATA "way from (select way,id ,landuse from otg_polygon where
> landuse is not null ) as foo using unique id using srid=900913"
>     PROCESSING "LABEL_NO_CLIP=ON"
>     PROCESSING "CLOSE_CONNECTION=DEFER"
>     CLASSITEM "landuse"
>     METADATA
>       WMS_TITLE "landuse"
>       WMS_GROUP_TITLE "landuse"
>       WMS_EXTENT "-3654301.4476046 3830412.5307382 6971056.978358
> 9730128.1208444"
>       WMS_ABSTRACT "layer landuse"
>     END #metadata
>     CLASS
>         STYLE
>             COLOR "#E3E2DF"
>         END
>     END
> END
>
> - corresponding TileCache config
>
> [landuse]
> type=WMS
> url=http://example.org/cgi-bin/mapserv?map=/path/to/mapfile.map
> layers=landuse
> extension=png
> bbox=-3654301.4476046,3830412.5307382,6971056.978358,9730128.1208444
> maxResolution=9783.93961875
> srs=EPSG:900913
> metaTile=true
> metaSize=8,8
>
> You have to adjust the extents, resolutions, srs, url to your needs
> Have a look at TileCache docs for further explanation. (www.tilecache.org)
>
>   
>> 2) how can I calculate an estimate of the size those tiles would occupy
>>     
>
> I have no formula at hand.
>
>   
>> 3) what naming convention (or extra details) are needed to make the
>> tiles viewable in OpenLayers.
>>
>>     
>
> Either you are using TileCache or you can direct access the cache
> directory via an OpenLayers.Layer.TileCache so you don't have to bother
> with naming.
>
>
> Lars
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>
>   


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