Re: [Geotools-gt2-users] Map Viewer help

[Martin D. <mar...@no...>]

Antonio Caccese a =E9crit :
> When I load the first shapefile in mapPane I obtain the following error=
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> message:
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> 18-ott-2005 15.13.51 org.geotools.map.DefaultMapContext getLayerBounds
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> GRAVE: Data source and map context coordinate system differ, yet it was=
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> not possible to get a projected bounds estimate...
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> org.opengis.referencing.operation.OperationNotFoundException: Bursa wol=
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> parameters required.

I'm not the shapefile datastore author (and not the MapContext author=20
neither), so the following is only guess:

This message sound like a warning (a severe one, while not fatal). Does=20
the application seems to work as before?

Reprojection support were added in shapefile datastore at some stage (I=20
don't remember which one, but it may be for 2.1). I would not be=20
surprise if 2.0 and 2.1 behave the same when a shape can't be=20
reprojected, but 2.0 was simply silent in this case.

In this particular case, it seems that the reprojection fails because=20
Bursa-Wolf parameters are missing. How is yours referencing system=20
defined? From a .prj file or from some EPSG authority factory? If you=20
are using an EPSG authority factory, epsg-access or epsg-hsql contains=20
more Bursa-Wolf parameter informations than epsg-wkt. If the CRS come=20
from a .prj file, may it be possible to add a "TOWGS84" element in the=20
WKT provided in the .prj file?

	Martin.