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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