[Proj4j] Conversion issue

[Gertjan Idema]

Hi Peter,

The sterea projection got added in may 2011. See:
http://trac.osgeo.org/proj4j/changeset/1995
If you have a second (older) copy of proj4j somewhere in your classpath,
that might explain your problems.
There is for example a proj4j.jar that is an Openstreetmap plug-in.
Maybe you have an old version of this jar somewhere in your project. The
code could also be in an other library you use.

Gertjan

On Fri, 2012-10-19 at 15:14 +0200, P. Peterse (HDB) wrote:

> Hello,
> 
> here is the stack trace from my code:
> ===============
> org.osgeo.proj4j.InvalidValueException: Unknown projection: sterea
>     at
> org.osgeo.proj4j.parser.Proj4Parser.parseProjection(Proj4Parser.java:71)
>     at org.osgeo.proj4j.parser.Proj4Parser.parse(Proj4Parser.java:43)
>     at org.osgeo.proj4j.CRSFactory.createFromParameters(CRSFactory.java:120)
>     at org.osgeo.proj4j.CRSFactory.createFromParameters(CRSFactory.java:98)
>     at com.hdb.tol.wms.RDConverter.convert2WGS84(RDConverter.java:114)
> ===============
> 
> What can I check?
> 
> Thanks for any reply.
> Peter
> 
> Op 19-10-2012 10:40, P. Peterse (HDB) schreef:
> > Hello Martin,
> >
> > It looks indeed that it's an initialisation issue. We are trying to
> > trace the bug and for now we suspect that the issue is in the class
> > Proj4Keyword
> > This method checkUnsupported is throwing the error. The code thinks one
> > of the params is not supported.
> >
> > If we find a sollution we will send it.
> >
> > Regards,
> > Peter Peterse
> >
> >
> > Op 17-10-2012 18:27, Martin Davis schreef:
> >> I just tried this as well, and the code works fine for me.  But if the
> >> problem is some kind of transient intialization error it's probably
> >> not going to show up in simple one-off tests.
> >>
> >> All I can suggest is to try and see if you can catch the problem in a
> >> debug session, and then have a look at why it might be occurring.
> >>
> >> Nice to see Proj4J is getting used!
> >>
> >> Martin
> >>
> >> On Wed, Oct 17, 2012 at 3:10 AM, P. Peterse (HDB)
> >> <p.peterse at han-dataport.nl> wrote:
> >>> Hello list,
> >>>
> >>> We are using org.osgeo.proj4j in our project and facing sometimes an
> >>> issue while transforming an coordinate from lat/long format to EPSG:28992.
> >>> Most times the conversion will work ok, but sometimes there comes an
> >>> exception:
> >>> towgs84 parameter is not supported
> >>> The input coordinate is:
> >>> LatLon[lat=52.11882666666666, lon=5.04316]
> >>>
> >>> The used code is as follows:
> >>> ===============
> >>>         CRSFactory csFactory = new CRSFactory();
> >>>         final String EPSG28992_PARAM = "+proj=sterea
> >>> +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.9999079
> >>> +x_0=155000 +y_0=463000 +ellps=bessel
> >>> +towgs84=565.417,50.3319,465.552,-0.398957,0.343988,-1.8774,4.0725
> >>> +units=m +no_defs";
> >>>         CoordinateReferenceSystem epsg28992 =
> >>> csFactory.createFromParameters("EPSG:28992", EPSG28992_PARAM);
> >>>
> >>>         final String WGS84_PARAM = "+title=long/lat:WGS84 +proj=longlat
> >>> +ellps=WGS84 +datum=WGS84 +units=degrees";
> >>>         CoordinateReferenceSystem epsg4326 =
> >>> csFactory.createFromParameters("WGS84",WGS84_PARAM);
> >>>
> >>>         CoordinateTransformFactory ctFactory = new
> >>> CoordinateTransformFactory();
> >>>         CoordinateTransform trans = ctFactory.createTransform(epsg4326,
> >>> epsg28992);
> >>>         ProjCoordinate inCoord = new ProjCoordinate();
> >>>         ProjCoordinate outCoord = new ProjCoordinate();
> >>>         inCoord.y = pos.getLat();
> >>>         inCoord.x = pos.getLon();
> >>>         //convert from lat/lon to RD.
> >>>         trans.transform(inCoord, outCoord);
> >>>         final double[] point = new double[2];
> >>>         point[0]=outCoord.x;
> >>>         point[1]=outCoord.y;
> >>>
> >>>         return point;
> >>> ===============
> >>>
> >>> Does anyone have a clue what's going wrong over here?
> >>>
> >>> Thanks for your patience.
> >>>
> >>> Regards,
> >>> Peter Peterse
> >>> _______________________________________________
> >>> Proj4j mailing list
> >>> Proj4j at lists.osgeo.org
> >>> http://lists.osgeo.org/mailman/listinfo/proj4j
> > _______________________________________________
> > Proj4j mailing list
> > Proj4j at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/proj4j
> >
> >
> 
> _______________________________________________
> Proj4j mailing list
> Proj4j at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/proj4j


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/proj4j/attachments/20121019/223fa732/attachment.html>