Perceived WCS inaccuracy

Working with WCS I discovered a small but noticable shift of data in all three major OSS WCS applications:

  • Geoserver 2.0 (SNAPSHOT downloaded 8 december 10.19UTC)
  • Mapserver 5.6.0 (MS4W Base installer v3.0 Beta 7 + MapServer 5.6.0 release Upgrade)
  • Deegree 2.3rc1 (Apache Tomcat 5.5.28)

To find out what the problem exactly was I’ve done some testing. I’ve taken a GeoTiff and configured all three the WCS applications to serve it. Gdalinfo gives us the following information, basically it is a GeoTIFF in epsg:3035 with a native resolution of 100m/pixel.

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