[Proj4j] XY -> LongLat proj=stere: org.osgeo.proj4j.ConvergenceFailureException

[Krzysztof Czainski]

Hello,

I am trying to convert coordinates XY <-> LongLat. All points are expected
to be near a specified point, let's say LongLat(21,52).

Converting LongLat -> XY works for me, but XY -> LongLat throws
org.osgeo.proj4j.ConvergenceFailureException. Here are the projection
parameters:

final String fromParams = "+proj=stere +ellps=WGS84 +lon_0=21.00000000
+lat_0=52.00000000 +no_defs";
final String toParams = "+proj=longlat +ellps=WGS84 +no_defs";

The attached MyTest.java demonstrates my problem. Running it prints:

.E
Time: 0,047
There was 1 error:
1)
test(org.osgeo.proj4j.MyTest)org.osgeo.proj4j.ConvergenceFailureException:
Iteration didn't converge
 at
org.osgeo.proj4j.proj.StereographicAzimuthalProjection.projectInverse(StereographicAzimuthalProjection.java:240)
at
org.osgeo.proj4j.proj.Projection.inverseProjectRadians(Projection.java:308)
 at
org.osgeo.proj4j.BasicCoordinateTransform.transform(BasicCoordinateTransform.java:119)
at org.osgeo.proj4j.MyTest.test(MyTest.java:27)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at org.osgeo.proj4j.MyTest.main(MyTest.java:9)

FAILURES!!!
Tests run: 1,  Failures: 0,  Errors: 1

What am I doing wrong?

Thanks in advance for any help with this,
Kris
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