[Tilecache] RE maxExtent and BBOX setting

[Steve.Toutant at inspq.qc.ca]

I should say that tilecache_seed.py gave no errors and there is nothing 
wrong in the apache logs. The image are created but don't show up in OL.
thanks
Steve

Steve Toutant, M. Sc.
Analyste en géomatique
Secteur environnement
Direction des risques biologiques, environnementaux et occupationnels
Institut national de santé publique du Québec
945, avenue Wolfe
Québec, Qc G1V 5B3 
Tél.: (418) 650-5115 #5281
Fax.: (418) 654-3144
steve.toutant at inspq.qc.ca
http://www.inspq.qc.ca
 




Steve.Toutant at inspq.qc.ca@openlayers.org 
Envoyé par : tilecache-bounces at openlayers.org
23/07/2009 11:54 AM

A
tilecache at openlayers.org
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Objet
[Tilecache] maxExtent and BBOX setting









Hello, 
I read several posts on bbox and maxExtent settings but I still can't make 
tilecache works. 
I'm confuse with maxExtent, maxResolution and BBOX of OpenLayers 
mapOptions, OpenLayers layer definition, tilecache.cfg and 
tilecache_seed.py. 

I need help for clarifying this please. 
Below are the different settings. 
thanks 
Steve 

************************OpenLayers 
Options********************************* 

var mapOptions = { 
projection: "EPSG:900913",//google 
displayProjection: new OpenLayers.Projection("EPSG:4326"), //Pour afficher 
les coord lat long 
units: "m", 
maxExtent: new OpenLayers.Bounds(-9239517, 5465442, -5565974, 
9349764),//bbox google = bbox tilecache_seed.py 
maxResolution: "4892", //BEcause of minZoomLevel: 5 for google MAp 
controls: [], 
numZoomLevels: 20 //google 
}; 
//basemap 
var googleM = new OpenLayers.Layer.Google( "Google Map", { minZoomLevel: 
5, type: G_NORMAL_MAP, 'sphericalMercator': true} ); 

************************OpenLayers Layer definition 
********************************* 
createTileCacheLayer 
( 
        'ilotsMiniTC', 'http://10.2.192.247/tilecache/dataWms', 
'ilotsMiniTC', 
        { 
                REPROJECT: 'false', 
                format:"image/gif", 
                transparent: "true", 
                maxExtent: new 
OpenLayers.Bounds(-9239517,5465442,-7987172.729,5465442), // = bbox of 
tilecache.cfg 
                maxResolution: 4892, 
                attribution:'ICU - INSPQ et <a href="
http://www.santepub-mtl.qc.ca/" target="_blank">DSP de Montréal</a>' 
        } 
); 

************************TILECACHE.CFG********************************* 

[ilotsMiniTC] 
type=WMSLayer 
url=http://localhost/cgi-bin/mapserv.exe?map=/ms4w/paccSante/map/paccsante_chaleur.map& 

extent_type=loose 
levels=15 
#Du niveau inférieur au niveau supérieur 
layers=ilotsLavalMini,ilotsMtlMini,ilotsMonteregieMini3,ilotsMonteregieMini1,ilotsMonteregieMini2,ilotsEstrieMini2,ilotsEstrieMini1,ilotsGatMini,ilotsLauMini2,ilotsLauMini1,ilotsLanMini,ilotsMauMini1,ilotsMauMini2,ilotsMauMini3,ilotsChauMini2,ilotsQcMini2,ilotsChauMini1,ilotsQcMini1 

extension=gif 
srs=EPSG:900913 
#metaTile=true 
metaBuffer=30 
#metaSize=10,10 
maxResolution=4892 
bbox=-9239517,5465442,-7987172.729,5465442 
#BBOX = maxExtent of OL Layer definition 

************************tilecache_seed.py************************ 
BBOX = maxExtent of OL map options 
tilecache_seed.py -f ilotsMiniTC 0 2 -b "-9239517, 5465442, -5565974, 
9349764" 



Steve Toutant, M. Sc.
Analyste en géomatique
Secteur environnement
Direction des risques biologiques, environnementaux et occupationnels
Institut national de santé publique du Québec
945, avenue Wolfe
Québec, Qc G1V 5B3 
Tél.: (418) 650-5115 #5281
Fax.: (418) 654-3144
steve.toutant at inspq.qc.ca
http://www.inspq.qc.ca 
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