[Tilecache] TileCache doesn't work correct for layer with sld styling

[Rahn Hanno (rahn)]

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 <http://webgis.hsw.ch/GINES/Styling/mysld_bezirke.php> ?"; 

var urlFusion = "http://webgis.hsw.ch/GINES/Styling/mysld_fusion.php <http://webgis.hsw.ch/GINES/Styling/mysld_fusion.php> ?"; 

var urlArray = ["http://webgis.hsw.ch/cgi-bin/mapserv.exe <http://webgis.hsw.ch/cgi-bin/mapserv.exe> ?", "http://195.176.253.211/cgi-bin/mapserv.exe <http://195.176.253.211/cgi-bin/mapserv.exe> ?"]; 

var urlArrayTC = ["http://webgis.hsw.ch/cgi-bin/tilecache/tilecache.cgi <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 <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 <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

 

------------------------------------------

Hanno Rahn, Dipl.-Ing. (FH) Geoinformatik

ZHAW Zürcher Hochschule für Angewandte Wissenschaften Umwelt und Natürliche Ressourcen 

Fachstelle Geoinformatik 

Grüental, Postfach CH-8820 Wädenswil 

Tel +41 (0)58 934 5592

Fax +41 (0)58 934 5580 

hanno.rahn at zhaw.ch 

 

 

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