Hi Mark, i don't know off the top of my head but these all look useful:
http://osgeo-org.1803224.n2.nabble.com/Trying-to-get-nodata-in-GeoTIFF-to-display-as-transparent-td6201753.html http://docs.geoserver.org/stable/en/user/styling/sld-cookbook/rasters.html (section: 'alpha channel') http://geowebcache.org/docs/1.2.2/configuration/xml/simple.html (assumes tile caching is ok for you) also, are you sure you don't want to reproject your images before giving them to geoserver ? its easy with gdal warp and you'll get better performance.. plus the border problem may solve itself. if not i'd definately recommend the tile cache option. my 2c -i Le 16/06/2011 10:08 AM, Mark Hammond a écrit : > Dear Geoserver-users, > > As someone new to Geoserver, I don’t know if what I ask is a bug, a pebkac, > or simply not possible: > > I’ve published two GeoTIFFs to my Geoserver install (both on ESPG:27700) and > added them as non-base layers on a Google Map base in OpenLayers. > > Where Geoserver is re-projecting the tiffs, it’s leaving a honking great > black border. I’ve added transparency requests on the layer, but they appear > to be ignored. > > Could anyone suggest what I’ve done wrong? > > Associated layer code: > > tg04v1 = new OpenLayers.Layer.WMS( > "TG04V1", serverURL, > { > LAYERS: 'test:TG04_CopyRaster1', > STYLES: '', > format: 'image/png8', > transparent: true, > tiled: !pureCoverage, > tilesOrigin : map.maxExtent.left + ',' + > map.maxExtent.bottom > }, > { > buffer: 0, > displayOutsideMaxExtent: true, > isBaseLayer: false, > transparent: true, > opacity: 0.9, > visibility: false > } > ); > > > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Geoserver-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users > > ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
