Good afternoon Arne, About a year ago, to eliminate the problem of white lines around the metatiles in GWC when using WMS Bilinear or "Bibubic" (someone needs to fix that spelling eh?) interpolation you gave me this advice, which works admirably:
>>"In the latest GWC a "gutter" function was introduced, a buffer around each image that gets sliced away. That would probably fix this, as long as you don't have labels that get cut off."<< However, I really want to be able to modify existing layers in my Geowebcache.xml, rather than having to create new names for the ones in geowebcache.xml. Unfortunately, the merging of attributes specified in geowebcache.xml with the ones automatically generated doesn't seem to work. In particular, the "gutter" setting doesn't merge. To reproduce: Using the standard "latest nightly" WAR from last night, and the standard data, I've done the following. Please give it a try, it will only take a couple minutes, perhaps you will see the problem right away. 1) Set up a clean Geoserver using the standard data. (I'm using Tomcat, but it shouldn't matter) 2) Add the geowebcache.xml below to the <tomcat_dir>/temp/geowebcache (note, the default geowebcache location doesn't seem to be in the data directory anymore...) 3) Start Geoserver and set the WMS default interpolation to Bilinear or "Bibubic". 4) Go to the GWC automatically generated demos. Click on the PNG 4326 examples for both the nurc:mosaic and the nurc:mosaic_1 layers. nurc:mosaic will have the ugly white lines, and nurc:mosaic_1 will be perfect. My question is whether the "gutter" setting in the Geowebcache.xml should override the automatically generated one for nurc:mosaic? One would think so, but perhaps this is by design? Best regards, Roger Bedell Coordinate Solutions Inc. The test geowebcache.xml file: <gwcConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation=" http://geowebcache.org/schema/1.2.2/geowebcache.xsd"; xmlns="http://geowebcache.org/schema/1.2.2";> <version>1.2.2</version> <backendTimeout>120</backendTimeout> <cacheBypassAllowed>true</cacheBypassAllowed> <layers> <!-- GWC definition for the standard nurc:mosaic, just for PNG and just for 4326 --> <wmsLayer> <name>nurc:mosaic</name> <mimeFormats> <string>image/png</string> </mimeFormats> <grids> <entry> <srs> <number>4326</number> </srs> <grid> <srs> <number>4326</number> </srs> <dataBounds> <coords> <double>6.346</double> <double>36.492</double> <double>20.83</double> <double>46.591</double> </coords> </dataBounds> <gridBounds> <coords> <double>-103.87</double> <double>44.37</double> <double>-103.62</double> <double>44.50</double> </coords> </gridBounds> <zoomStart>0</zoomStart> <zoomStop>20</zoomStop> </grid> </entry> </grids> <wmsUrl> <string>http://localhost:8080/geoserver/wms</string> </wmsUrl> <wmsLayers>nurc:mosaic</wmsLayers> <!--This doesn't seem to merge with the automatically generated nurc:mosaic value!--> <gutter>20</gutter> </wmsLayer> <!-- This layer is identical to the nurc:mosaic, but just with a different GWC name. --> <wmsLayer> <name>nurc:mosaic_1</name> <mimeFormats> <string>image/png</string> </mimeFormats> <grids> <entry> <srs> <number>4326</number> </srs> <grid> <srs> <number>4326</number> </srs> <dataBounds> <coords> <double>6.346</double> <double>36.492</double> <double>20.83</double> <double>46.591</double> </coords> </dataBounds> <gridBounds> <coords> <double>-103.87</double> <double>44.37</double> <double>-103.62</double> <double>44.50</double> </coords> </gridBounds> <zoomStart>0</zoomStart> <zoomStop>20</zoomStop> </grid> </entry> </grids> <wmsUrl> <string>http://localhost:8080/geoserver/wms</string> </wmsUrl> <wmsLayers>nurc:mosaic</wmsLayers> <!--This works here...--> <gutter>20</gutter> </wmsLayer> </layers> </gwcConfiguration>
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