[OpenLayers-Users] mapserver layer with bad rendering

[Didrik Pinte]

Hi,

I've setted up an OpenLayers client connected on a WMS MapServer. It
works fine except with a raster layer.

When calling mapserver directly, the raster layer is rendered fine :
http://public.dpinte.fastmail.fm/downloads/mapserver.png 

When rendered using OpenLayers, they are some dirty pixels on the
picture. See http://public.dpinte.fastmail.fm/downloads/openlayers.png 

Is there a way to correct this ? The layer definition is the
following : 

        var ortho = new OpenLayers.Layer.MapServer( "Orthophotoplans", 
            "http://myserver/cgi-bin/mapserv",
                { 
                    map: '/var/data/wms.map', 
                    transparent: 'false', 
                    layers: 'ortho', 
                    format: 'png',
                }, 
                {
                    'singleTile': false,
                    'isBaseLayer': false,
                    'displayInLayerSwitcher':true
                }
        );

Best regards,

Didrik
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