[Tilecache] RE maxExtent and BBOX setting

[Martin Ouellet]

if the tile are created but OL does not display it, you should have a error
message in firebug:
here some possible errors:
->Permission denied on directory so tilecache cannot read the image
->file ?.png does not exist
-> x value too far from tile corner x

are you sure firebug don't show any error?

MartinO

2009/7/23 <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* <steve.toutant at inspq.qc.ca>*
> **http://www.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  cc
>   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* <steve.toutant at inspq.qc.ca>*
> **http://www.inspq.qc.ca* <http://www.inspq.qc.ca/>
>
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>
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>
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