Hi list,

I've got a problem when trying to display GeoTiffs in EPSG:3995 and EPSG:3576.
Theese rasters are GEBCO grids in native 4326 projection.

gdalinfo says:
----------------
Driver: GTiff/GeoTIFF
Files: gebco_08_4326.tif
Size is 43200, 21600
Coordinate System is:
GEOGCS["WGS 84",
    DATUM["WGS_1984",
        SPHEROID["WGS 84",6378137,298.257223563,
            AUTHORITY["EPSG","7030"]],
        AUTHORITY["EPSG","6326"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","4326"]]
Origin = (-180.000000000000000,90.000000000000000)
Pixel Size = (0.008333333333333,-0.008333333333333)
Metadata:
  AREA_OR_POINT=Area
Image Structure Metadata:
  INTERLEAVE=BAND
Corner Coordinates:
Upper Left  (-180.0000000,  90.0000000) (180d 0' 0.00"W, 90d 0' 0.00"N)
Lower Left  (-180.0000000, -90.0000000) (180d 0' 0.00"W, 90d 0' 0.00"S)
Upper Right ( 180.0000000,  90.0000000) (180d 0' 0.00"E, 90d 0' 0.00"N)
Lower Right ( 180.0000000, -90.0000000) (180d 0' 0.00"E, 90d 0' 0.00"S)
Center      (   0.0000000,   0.0000000) (  0d 0' 0.01"E,  0d 0' 0.01"N)
Band 1 Block=43200x1 Type=Int16, ColorInterp=Gray
----------------
When displaying in conic and polar projections, I get artifacts near
the north pole and the dateline.
This is what it looks like:
http://dl.dropbox.com/u/7488735/conic.png
http://dl.dropbox.com/u/7488735/polar.png
Grey areas are raster artifacts.
When displaying only vector layers in conic and polar projections
(with native EPSG4326 projection), everything looks ok.

I guess it's a problem with geotools or gdal, and it was discussed here:
http://osgeo-org.1803224.n2.nabble.com/Polar-Stereographic-Reprojection-in-2-x-td6127778.html

I know it, because when I set custom central meridian parameter for
polar projections, I get an error:
------------
Error Code: Internal error
Message: org.vfny.geoserver.wms.WmsException: Rendering process failed
Rendering process failed Error rendering feature This "AxisDirection"
object is too complex for WKT syntax.
------------

Is there a workaround for this issue?

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