Marco, here&#39;s one thing. As I can see, you have MapServer as your source server. In your map file the outputformat is    <br>    OUTPUTFORMAT<br>        ...<br>        IMAGEMODE RGB<br>        ...<br>    END<br>that means the served images do not have alpha channel, try replacing that with RGBA.<br>

And sorry for a little bit of hacking :) (deny access to the config/map files)<br><br>regards, michael<br><br><div class="gmail_quote">On Fri, Jan 6, 2012 at 7:38 PM, DeDuikertjes <span dir="ltr">&lt;<a href="mailto:DeDuikertjes@xs4all.nl">DeDuikertjes@xs4all.nl</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    <font size="-1">Oliver,<br>
      <br>
      Thank you. I did as you suggested<br>
      <br>
      I&#39;ve added a layer to may config (see attached).<br>
      The result can be seen at: <br>
<a href="http://178.63.74.185/hosting/demo/show_source.html?layernames=testlufo,Bedrijventerrein&amp;test=true&amp;opacity=1&amp;url=http://test.tiles.md-kwadraat.nl/mp/service" target="_blank">http://178.63.74.185/hosting/demo/show_source.html?layernames=testlufo,Bedrijventerrein&amp;test=true&amp;opacity=1&amp;url=http://test.tiles.md-kwadraat.nl/mp/service</a><br>


      <br>
      Still the layer defined with transparency 0.4 is fully opaque. Am 
      miss understanding something?<br>
      <br>
      Marco<br>
      <br>
      caches:<br>
        _Bedrijventerrein:<br>
          grids:<br>
          - applas_grid<br>
          link_single_color_images: true<br>
          sources:<br>
          - wms_Bedrijventerrein<br>
        _testlufo:<br>
          grids:<br>
          - applas_grid<br>
          link_single_color_images: true<br>
          sources:<br>
          - wms_testlufo<br>
      globals:<br>
        cache:<br>
          base_dir: /var/applas_user_data/test/cache/<br>
          lock_dir: /var/applas_user_data/test/cache/locks/<br>
          meta_buffer: 255<br>
          meta_size:<br>
          - 3<br>
          - 3<br>
          minimize_meta_requests: true<br>
      grids:<br>
        applas_grid:<br>
          bbox:<br>
          - -285401.920000<br>
          - 22598.080000<br>
          - 595401.920000<br>
          - 903401.920000<br>
          res:<br>
          - 3440.640000<br>
          - 1720.320000<br>
          - 860.160000<br>
          - 430.080000<br>
          - 215.040000<br>
          - 107.520000<br>
          - 53.760000<br>
          - 26.880000<br>
          - 13.440000<br>
          - 6.720000<br>
          - 3.360000<br>
          - 1.680000<br>
          - 0.840000<br>
          - 0.420000<br>
          - 0.210000<br>
          srs: EPSG:28992<br>
          tile_size:<br>
          - 256<br>
          - 256<br>
      layers:<br>
      - name: Bedrijventerrein<br>
        sources:<br>
        - _Bedrijventerrein<br>
        title: Bedrijventerrein<br>
      - name: testlufo<br>
        sources:<br>
        - _testlufo<br>
        title: testlufo<br>
      services:<br>
        tms: ~<br>
        wms:<br>
          image_formats:<br>
          - image/png<br>
          - png<br>
          md:<br>
            abstract: test for transparency.<br>
            access_constraints: none<br>
            contact:<br>
              address: none<br>
              city: none<br>
              country: The Netherlands<br>
              email: none<br>
              organization: none<br>
              person: none<br>
              phone: none<br>
              position: none<br>
              postcode: none<br>
            fees: None<br>
            online_resource: <a href="http://tiles.md-kwadraat.nl/" target="_blank">http://tiles.md-kwadraat.nl/</a><br>
            title: test for transparency.<br>
          srs:<br>
          - EPSG:28992<br>
      sources:<br>
        wms_Bedrijventerrein:<br>
          image:<br>
            opacity: 0.400000<br>
          req:<br>
            layers: Bedrijventerrein<br>
            transparent: true<br>
            url:
<a href="http://178.63.74.185/fcgi-bin/mapserv?map=/var/www/html/shared/services/wmsproxy/wmsproxy.map" target="_blank">http://178.63.74.185/fcgi-bin/mapserv?map=/var/www/html/shared/services/wmsproxy/wmsproxy.map</a><br>


          supported_srs:<br>
          - EPSG:28992<br>
          type: wms<br>
        wms_testlufo:<br>
          concurrent_requests: 4<br>
          image:<br>
            opacity: 1.000000<br>
          req:<br>
            layers: Lufo<br>
            transparent: true<br>
            url:
<a href="http://178.63.74.185/fcgi-bin/mapserv?map=/var/www/html/shared/services/wmsproxy/wmsproxy.map" target="_blank">http://178.63.74.185/fcgi-bin/mapserv?map=/var/www/html/shared/services/wmsproxy/wmsproxy.map</a><br>


          supported_srs:<br>
          - EPSG:28992<br>
          type: wms<br>
          wms_opts:<br>
            featureinfo: true<br>
      <br>
      <br>
      <br>
      <br>
      <br>
    </font>Op 6-1-2012 14:29, Oliver Tonnhofer schreef:
    <blockquote type="cite">
      <pre>Hi Marco,

On 06.01.2012, at 14:16, DeDuikertjes wrote:
</pre>
      <blockquote type="cite">
        <pre>Please help me with tracking down this problem.
Is there anything wrong with my config?
How can I track this problem. I really don&#39;t know where to start.
</pre>
      </blockquote>
      <pre>it does only work when you overlay multiple layers. So you should try to add another layer below your layer.

Regards,
Oliver

</pre>
    </blockquote>
  </div>

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<br></blockquote></div><br>