[MapProxy] opacity not working?

[DeDuikertjes]

Michael,

Thanks for your prompt response.

The WMS-service is not under my control.
It's an ArcGIS10 server (the one serving the layer which doesn't like te 
be opaque).
Probably the image is quantised, but that's what we want as we are 
aiming on mobile use.

Is there a way to see if the image is quantised?
Why is there a problem? Can it be mitigated?

MArco

Op 3-1-2012 16:15, Michael Shishcu schreef:
> Hi,
>
> Do you have quantisation for the outputformat at the mapserver side? 
> if so, this can be the problem.
>
> regards, michael
>
> On Tue, Jan 3, 2012 at 5:08 PM, DeDuikertjes <DeDuikertjes at xs4all.nl 
> <mailto:DeDuikertjes at xs4all.nl>> wrote:
>
>     List,
>
>     I've the mapproxy config to my liking. Everything is working fine
>     except for the opacity on a source.
>
>     I would expect a layer pointing to a cache pointing to a source
>     with definition:
>       wms_Bedrijventerrein:
>         concurrent_requests: 4
>         image: {opacity: 0.1}
>         req: { layers: Bedrijventerrein, transparent: true, url:
>     'http://myservice.nl/MapServer/WMSServer'}
>         seed_only: false
>         supported_srs: ['EPSG:28992']
>         type: wms
>         wms_opts: {featureinfo: true}
>     to be rendered almost transparent when requested and/ or merged on
>     top of other layers.
>     The result is unfortunately fully opaque.
>
>     Can anyone point me to what I am doing wrong.
>
>     I've isolated the problem and tested it in the configuration
>     attached below.
>
>     Any help greatly appreciated,
>     MArco
>
>     caches:
>       _Bedrijventerrein:
>         grids: [applas_grid]
>         link_single_color_images: true
>         sources: [wms_Bedrijventerrein]
>       _lufo:
>         cache: {directory_layout: tc, type: file}
>         grids: [applas_grid]
>         link_single_color_images: true
>         meta_buffer: 0
>         meta_size: [4, 4]
>         minimize_meta_requests: true
>         sources: [lufo_wms]
>         format: image/png
>         image:
>           mode: RGBA
>     globals:
>       cache:
>         base_dir: /var/applas_user_data/prod/cache/
>         lock_dir: /var/applas_user_data/prod/cache/locks/
>         meta_buffer: 255
>         meta_size: [3, 3]
>         minimize_meta_requests: true
>       image:
>         formats:
>           image/png:
>             encoding_options: {quantizer: fastoctree}
>             mode: P
>             transparent: true
>     grids:
>       applas_grid:
>         bbox: [-285401.91999999998, 22598.080000000002,
>     595401.92000000004, 903401.92000000004]
>         res: [3440.6399999999999, 1720.3199999999999,
>     860.15999999999997, 430.07999999999998,
>           215.03999999999999, 107.52, 53.759999999999998,
>     26.879999999999999, 13.44, 6.7199999999999998,
>           3.3599999999999999, 1.6799999999999999, 0.83999999999999997,
>     0.41999999999999998,
>           0.20999999999999999]
>         srs: EPSG:28992
>         tile_size: [256, 256]
>     layers:
>     - name: lufo
>       sources: [_lufo]
>       title: Luchtfoto
>     - name: Bedrijventerrein
>       sources: [_Bedrijventerrein]
>       title: Bedrijventerrein
>     services:
>       tms: null
>       wms:
>         image_formats: ['image/png']
>         md:
>           abstract: Tiled WMS
>           access_constraints: None
>           contact: {address: mystreet 1, city: Utrecht, country: The
>     Netherlands, email: nope at spam.org <mailto:nope at spam.org>,
>             organization: nope, person: nope, phone: nope,
>             position: Technical Director, postcode: nope}
>           fees: None
>           online_resource: http://myservice.nl/
>           title: tile service.
>         srs: ['EPSG:28992', 'EPSG:900913', 'EPSG:4326']
>     sources:
>       lufo_wms:
>         concurrent_requests: 4
>         req: {layers: ipo_luchtfoto_actueel, url:
>     'http://myservice.nl/mapserv.cgi?map=luchtfoto.map'}
>         supported_srs: ['EPSG:28992']
>         type: wms
>       wms_Bedrijventerrein:
>         concurrent_requests: 4
>         image: {opacity: 0.1}
>         req: { layers: Bedrijventerrein, transparent: true, url:
>     'http://myservice.nl/MapServer/WMSServer'}
>         seed_only: false
>         supported_srs: ['EPSG:28992']
>         type: wms
>         wms_opts: {featureinfo: true}
>
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