Jean Pommier created GEOS-4975:
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Summary: image pyramid plugin creates wrong tiles
Key: GEOS-4975
URL: https://jira.codehaus.org/browse/GEOS-4975
Project: GeoServer
Issue Type: Bug
Affects Versions: 2.1.3
Environment: Ubuntu 11.04, geoserver 2.1.3, gdal 1.6.3
Reporter: Jean Pommier
Assignee: Andrea Aime
Attachments: pyrPlugin-zoomlevel1.png, pyrPlugin-zoomlevel2.png
The output of image pyramids are sometimes bad : either no tile at all at a given level, or, worse, some transparent areas in the image. Not corresponding to a full tile (I'm always using tiled display in OpenLayers)
The source data are geotiff, and processed using GDAL (gdal_retile.py -v -r bilinear -levels 6 -ps 2048 2048 -co "TILED=YES" -co "BLOCKXSIZE=256" -co "BLOCKYSIZE=256" -s_srs EPSG:4326 -targetDir srtmpyr srtm.tif)
See attachments, or live at : http://ns387808.ovh.net:8080/geoserver-prod/ml/wms?service=WMS&version=1.1.0&request=GetMap&layers=ml:ml_v_1b_srtmpyr&styles=&bbox=-12.243333,10.160000000000055,4.2433336666666035,25.0&width=512&height=460&srs=EPSG:4326&format=application/openlayers
It should fit whole Mali country... and from one zoom level to another, is not consistent at all...
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