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Hi Peter,<BR>
<BR>
The sterea projection got added in may 2011. See: <A HREF="http://trac.osgeo.org/proj4j/changeset/1995">http://trac.osgeo.org/proj4j/changeset/1995</A><BR>
If you have a second (older) copy of proj4j somewhere in your classpath, that might explain your problems.<BR>
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.<BR>
<BR>
Gertjan<BR>
<BR>
On Fri, 2012-10-19 at 15:14 +0200, P. Peterse (HDB) wrote:
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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)
>> <<A HREF="mailto:p.peterse@han-dataport.nl">p.peterse@han-dataport.nl</A>> 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
>>> <A HREF="mailto:Proj4j@lists.osgeo.org">Proj4j@lists.osgeo.org</A>
>>> <A HREF="http://lists.osgeo.org/mailman/listinfo/proj4j">http://lists.osgeo.org/mailman/listinfo/proj4j</A>
> _______________________________________________
> Proj4j mailing list
> <A HREF="mailto:Proj4j@lists.osgeo.org">Proj4j@lists.osgeo.org</A>
> <A HREF="http://lists.osgeo.org/mailman/listinfo/proj4j">http://lists.osgeo.org/mailman/listinfo/proj4j</A>
>
>
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