[Tilecache] Transparency issue again

[Tobias Weiß]

Hey Simon,

yeah, great hint! It worked. Thanks a lot, I was almost going crazy ... ;-)

Great, thanks.
Tobias

---
> Hi tobias maybe you can try to turn on transparency in your mapfile,
> try to overwrite the default png driver with this
>
> OUTPUTFORMAT
>     NAME "png"
>     MIMETYPE "image/png"
>     DRIVER "GD/PNG"
>     EXTENSION "png"
>     IMAGEMODE RGBA
>     TRANSPARENT ON
>     FORMATOPTION          "INTERLACE=OFF"   #for tilecache, metaTile On
> END
>
> 2010/1/20 Tobias Weiß <tobias.weiss at pik-potsdam.de
> <mailto:tobias.weiss at pik-potsdam.de>>
>
>     Hello Tilecachers,
>
>     I am new to this list. I am developing map applications using
>     Google Maps, OpenlLayers & MapServer. Now I want to improve
>     performance and installed Tilecache that runs fine under
>     mod_python. I can render tiles successfully but can´t get them
>     transparent. I have searched through the list but couldn´t find a
>     solution to my problem. Don´t know if this maybe derives from the
>     fact that I use type=MapServer instead of type=WMS in my
>     tilecache.cfg to request a layer. As far as I read the other
>     posts, getting transparent tiles works by appending
>     "transparent=true" to the WMS url but this doesn´t seem to work
>     with type=MapServer.
>
>     Ok, this is my code:
>
>     #######
>
>     JavaScript:
>
>     new
>     OpenLayers.Layer.WMS("name","http:/localhost/cgi-bin/tilecache/tilecache.py,
>                                                                    
>                                                 {
>                                                                    
>                                                 maxExtent:new
>     OpenLayers.Bounds(-198,-115.542749339137,198,109.146905833277),
>                                                                    
>                                                 maxResolution:156543.0339,
>                                                                    
>                                                 layers:"worldtest",
>                                                                    
>                                                 format: 'image/png',
>                                                                    
>                                                 transparent:true
>                                                                    
>                                                 });
>
>     #########
>
>     tilecache.cfg
>
>     [worldtest]
>     layers = country
>     spherical_mercator = yes
>     extension = png
>     mapfile = /mymaps/world_test.map
>     transparent = true
>     data_extent = -198.0,-115.542749339,198.0,109.146905833
>     type = MapServer
>     metatile = no
>     srs = EPSG:4326
>     metabuffer =
>     10,10                                                              
>     bbox = -198.0,-115.542749339,198.0,109.146905833
>     metasize = 5,5
>     extent_type=loose
>
>     # Some extracts from my world_test.map
>
>     WEB
>         LOG world_test.log
>         IMAGEPATH ''
>         IMAGEURL ''
>     METADATA
>          WMS_ONLINERESOURCE 'http://?map=world_test.map'
>          WMS_SRS 'EPSG:4326 EPSG:900313'
>          WMS_ACCESSCONSTRAINTS 'none'
>          WMS_TITLE 'WMSTitel'
>          WMS_FEATURE_INFO_MIME_TYPE 'text/html'
>          WMS_ABSTRACT 'WMSmetatext'
>     END  #METADATA
>
>     This code is working fine, just transparency is missing. A single
>     tiles url is e.g the following:
>     http://localhost/cgi-bin/tilecache/tilecache.py?MAXEXTENT=left-bottom%3D%28-198%2C-115.542749339137%29%20right-top%3D%28198%2C109.146905833277%29&MAXRESOLUTION=156543.0339&LAYERS=worldtest&FORMAT=image%2Fpng&TRANSPARENT=true&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=-0.003589194267988205,-0.003589194267988205,10018754.166010806,100187
>     54.166010806&WIDTH=256&HEIGHT=256
>     <http://localhost/cgi-bin/tilecache/tilecache.py?MAXEXTENT=left-bottom%3D%28-198%2C-115.542749339137%29%20right-top%3D%28198%2C109.146905833277%29&MAXRESOLUTION=156543.0339&LAYERS=worldtest&FORMAT=image%2Fpng&TRANSPARENT=true&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=-0.003589194267988205,-0.003589194267988205,10018754.166010806,10018754.166010806&WIDTH=256&HEIGHT=256>
>
>     I read somewhere that MapServer needs to be configured to work as
>     a Web Map Service (WMS) provider in order to work with Tilecache.
>     I checked my MapServer and as far as I see it supports WMS.
>
>     I there something wrong in my tilecache.cfg?
>
>     Best,
>     Tobias
>
>
>
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>
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