[Tilecache] TileCache only results in white images

[Francisco Domingues]

I noticed that you have many resolutions in tilecache.cfg for only 5 levels...
 

Francisco Domingues




> Date: Thu, 15 Oct 2009 01:58:58 -0700
> From: rahn at zhaw.ch
> To: tilecache at openlayers.org
> Subject: [Tilecache]  TileCache only results in white images
> 
> 
> hello list,
> 
> I'm new in using TileCache with OpenLayers. Perhaps you can help me.
> 
> I try to make Tiles for different Layers. First I have some Polygons with
> region-borders. After this I have some background data like streets for
> example.
> 
> In my OpenLayers file I use the follwing code:
> 
> var url = "http://webgis.hsw.ch/GINES/Styling/mysld_bezirke.php?";
> 
> var urlFusion = "http://webgis.hsw.ch/GINES/Styling/mysld_fusion.php?";
> 
> var urlArray = ["http://webgis.hsw.ch/cgi-bin/mapserv.exe?",
> "http://195.176.253.211/cgi-bin/mapserv.exe?"];
> 
> var urlArrayTC = ["http://webgis.hsw.ch/cgi-bin/tilecache/tilecache.cgi?"];
> 
> var mapFile = "../htdocs/GINES/Maps/Gemeinden_Bern.map";
> 
>  
> 
> var options1 = {
> 
>             maxExtent: new OpenLayers.Bounds(555100,129900,678450,245000),
> 
>             maxScale: '500',
> 
>             minScale: '458262',
> 
>             resolutions:[481.8359375, 240.91796875, 120.458984375,
> 60.2294921875, 30.11474609375, 15.057373046875, 7.5286865234375,
> 3.76434326171875, 1.882171630859375, 0.9410858154296875,
> 0.47054290771484375, 0.23527145385742188, 0.11763572692871094,
> 0.058817863464355469, 0.029408931732177734, 0.014704465866088867,
> 0.0073522329330444336, 0.0036761164665222168, 0.0018380582332611084,
> 0.0009190291166305542],
> 
>             maxresolution:481.8359375,
> 
>             minresolution:0.0009190291166305542,
> 
>             units: 'm',
> 
>             projection: "EPSG:21781",
> 
>             controls: []
> 
> };
> 
>  
> 
> var map = new OpenLayers.Map('map',options1);
> 
>  
> 
> var wms = new OpenLayers.Layer.WMS("Gemeinden",urlArrayTC,
> {map:mapFile,layers:layerName,format:"image/png",EXCEPTIONS:"application/vnd.ogc.se_inimage"}
> );
> 
>  
> 
> var
> sld_string=url+"jahr="+jahr+"&indikator="+indikator1+"&klassen="+klassen+"&vis="+vis+"&fusion="+jahr4+"&farbe="+farbe;
> 
>  
> 
> wms.mergeNewParams({ SLD:sld_string});
> 
>  
> You can see that i'm using an skript which generates an sld file. This file
> works with the mergeNewParams Parameter.
> 
> I get the data out of a postgreSQL database.
> 
> In my tilecache.cfg file I have this code:
> 
> [gemeinden_2008]
> 
> type=WMS
> 
> url=http://webgis.hsw.ch/cgi-bin/mapserv.exe?map=C:/ms4w/Apache/htdocs/GINES/Maps/Gemeinden_Bern.map
> 
> #mapfile=C:/ms4w/Apache/htdocs/GINES/Maps/Gemeinden_Bern.map
> 
> layers=gemeinden_2008
> 
> maxresolution=481.8359375
> 
> minresolution=0.0009190291166305542
> 
> resolutions=481.8359375, 240.91796875, 120.458984375, 60.2294921875,
> 30.11474609375, 15.057373046875, 7.5286865234375, 3.76434326171875,
> 1.882171630859375, 0.9410858154296875, 0.47054290771484375,
> 0.23527145385742188, 0.11763572692871094, 0.058817863464355469,
> 0.029408931732177734, 0.014704465866088867, 0.0073522329330444336,
> 0.0036761164665222168, 0.0018380582332611084, 0.0009190291166305542
> 
> levels=5
> 
> extension=png
> 
> extent_type=loose
> 
> srs=EPSG:21781
> 
> bbox=555100,129900,678450,245000
> 
> metaTile=true
> 
> ----------------------------------------------
> 
> [seen]
> type=WMS
> url=http://webgis.hsw.ch/cgi-bin/mapserv.exe?map=C:/ms4w/Apache/htdocs/GINES/Maps/Gemeinden_Bern.map
> #mapfile=C:/ms4w/Apache/htdocs/GINES/Maps/Gemeinden_Bern.map
> layers=seen
> extension=png
> transparency=true
> extent_type=loose
> srs=EPSG:21781
> bbox=555100,129900,678450,245000
> 
> --------------------------------------------
> 
> And now I have a problem.
> For the Layer "seen" all works fine I get the Tiles and all is ok. In my
> TielCache Directory I have the different png files.
> 
> But with the Layer "gemeinden_2008" it doesn't work. I only get white
> images. On the Server in the TielCache Directory I have different white
> images without the map-data.
> 
> I don't know where what I have to do to correct the error. Perhaps somebody
> can help me.
> 
> I use OpenLayers 2.8 with UMN Mapserver and PostgreSQL database.
> 
> Thank you very much for your help.
> 
> Greetings
> Hanno Rahn
> 
> -- 
> View this message in context: http://n2.nabble.com/TileCache-only-results-in-white-images-tp3828062p3828062.html
> Sent from the TileCache mailing list archive at Nabble.com.
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