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    <font size="-1">List,<br>
      <br>
      I've the mapproxy config to my liking. Everything is working fine
      except for the opacity on a source.<br>
      <br>
      I would expect a layer pointing to a cache pointing to a source
      with definition:<br>
      &nbsp; wms_Bedrijventerrein:<br>
      &nbsp;&nbsp;&nbsp; concurrent_requests: 4<br>
      &nbsp;&nbsp;&nbsp; image: {opacity: 0.1}<br>
      &nbsp;&nbsp;&nbsp; req: { layers: Bedrijventerrein, transparent: true, url:
      '<a class="moz-txt-link-freetext" href="http://myservice.nl/MapServer/WMSServer">http://myservice.nl/MapServer/WMSServer</a>'}<br>
      &nbsp;&nbsp;&nbsp; seed_only: false<br>
      &nbsp;&nbsp;&nbsp; supported_srs: ['EPSG:28992']<br>
      &nbsp;&nbsp;&nbsp; type: wms<br>
      &nbsp;&nbsp;&nbsp; wms_opts: {featureinfo: true}<br>
      to be rendered almost transparent when requested and/ or merged on
      top of other layers. <br>
      The result is unfortunately fully opaque.<br>
      <br>
      Can anyone point me to what I am doing wrong.<br>
      <br>
      I've isolated the problem and tested it in the configuration
      attached below.<br>
      <br>
      Any help greatly appreciated,<br>
      MArco<br>
      <br>
      caches:<br>
      &nbsp; _Bedrijventerrein:<br>
      &nbsp;&nbsp;&nbsp; grids: [applas_grid]<br>
      &nbsp;&nbsp;&nbsp; link_single_color_images: true<br>
      &nbsp;&nbsp;&nbsp; sources: [wms_Bedrijventerrein]<br>
      &nbsp; _lufo:<br>
      &nbsp;&nbsp;&nbsp; cache: {directory_layout: tc, type: file}<br>
      &nbsp;&nbsp;&nbsp; grids: [applas_grid]<br>
      &nbsp;&nbsp;&nbsp; link_single_color_images: true<br>
      &nbsp;&nbsp;&nbsp; meta_buffer: 0<br>
      &nbsp;&nbsp;&nbsp; meta_size: [4, 4]<br>
      &nbsp;&nbsp;&nbsp; minimize_meta_requests: true<br>
      &nbsp;&nbsp;&nbsp; sources: [lufo_wms]<br>
      &nbsp;&nbsp;&nbsp; format: image/png<br>
      &nbsp;&nbsp;&nbsp; image:<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mode: RGBA<br>
      globals:<br>
      &nbsp; cache:<br>
      &nbsp;&nbsp;&nbsp; base_dir: /var/applas_user_data/prod/cache/<br>
      &nbsp;&nbsp;&nbsp; lock_dir: /var/applas_user_data/prod/cache/locks/<br>
      &nbsp;&nbsp;&nbsp; meta_buffer: 255<br>
      &nbsp;&nbsp;&nbsp; meta_size: [3, 3]<br>
      &nbsp;&nbsp;&nbsp; minimize_meta_requests: true<br>
      &nbsp; image:<br>
      &nbsp;&nbsp;&nbsp; formats:<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; image/png:<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; encoding_options: {quantizer: fastoctree}<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; mode: P<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; transparent: true<br>
      grids:<br>
      &nbsp; applas_grid:<br>
      &nbsp;&nbsp;&nbsp; bbox: [-285401.91999999998, 22598.080000000002,
      595401.92000000004, 903401.92000000004]<br>
      &nbsp;&nbsp;&nbsp; res: [3440.6399999999999, 1720.3199999999999,
      860.15999999999997, 430.07999999999998,<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 215.03999999999999, 107.52, 53.759999999999998,
      26.879999999999999, 13.44, 6.7199999999999998,<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3.3599999999999999, 1.6799999999999999, 0.83999999999999997,
      0.41999999999999998,<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.20999999999999999]<br>
      &nbsp;&nbsp;&nbsp; srs: EPSG:28992<br>
      &nbsp;&nbsp;&nbsp; tile_size: [256, 256]<br>
      layers:<br>
      - name: lufo<br>
      &nbsp; sources: [_lufo]<br>
      &nbsp; title: Luchtfoto<br>
      - name: Bedrijventerrein<br>
      &nbsp; sources: [_Bedrijventerrein]<br>
      &nbsp; title: Bedrijventerrein<br>
      services:<br>
      &nbsp; tms: null<br>
      &nbsp; wms:<br>
      &nbsp;&nbsp;&nbsp; image_formats: ['image/png']<br>
      &nbsp;&nbsp;&nbsp; md:<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; abstract: Tiled WMS<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; access_constraints: None<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; contact: {address: mystreet 1, city: Utrecht, country: The
      Netherlands, email: <a class="moz-txt-link-abbreviated" href="mailto:nope@spam.org">nope@spam.org</a>,<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; organization: nope, person: nope, phone: nope,<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; position: Technical Director, postcode: nope}<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; fees: None<br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; online_resource: <a class="moz-txt-link-freetext" href="http://myservice.nl/">http://myservice.nl/</a><br>
      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; title: tile service.<br>
      &nbsp;&nbsp;&nbsp; srs: ['EPSG:28992', 'EPSG:900913', 'EPSG:4326']<br>
      sources:<br>
      &nbsp; lufo_wms:<br>
      &nbsp;&nbsp;&nbsp; concurrent_requests: 4<br>
      &nbsp;&nbsp;&nbsp; req: {layers: ipo_luchtfoto_actueel, url:
      '<a class="moz-txt-link-freetext" href="http://myservice.nl/mapserv.cgi?map=luchtfoto.map">http://myservice.nl/mapserv.cgi?map=luchtfoto.map</a>'}<br>
      &nbsp;&nbsp;&nbsp; supported_srs: ['EPSG:28992']<br>
      &nbsp;&nbsp;&nbsp; type: wms<br>
      &nbsp; wms_Bedrijventerrein:<br>
      &nbsp;&nbsp;&nbsp; concurrent_requests: 4<br>
      &nbsp;&nbsp;&nbsp; image: {opacity: 0.1}<br>
      &nbsp;&nbsp;&nbsp; req: { layers: Bedrijventerrein, transparent: true, url:
      '<a class="moz-txt-link-freetext" href="http://myservice.nl/MapServer/WMSServer">http://myservice.nl/MapServer/WMSServer</a>'}<br>
      &nbsp;&nbsp;&nbsp; seed_only: false<br>
      &nbsp;&nbsp;&nbsp; supported_srs: ['EPSG:28992']<br>
      &nbsp;&nbsp;&nbsp; type: wms<br>
      &nbsp;&nbsp;&nbsp; wms_opts: {featureinfo: true}<br>
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