As I see in your code, you are working with the GK Systems for Austria. I am
form Austria and had this problem too.
I solved it by transforming into EPSG:31287 (Austria Labmert), which covers
the whole Area of Ausria. You must include the TOWGS84 clause in your wkt
TOWGS84[577.326,90.129,463.919,5.137,1.474,5.297,2.4232],
Below my def for EPSG:31251, the TOWGS84 cluase is identical for EPSG:31252
and EPSG:31253
PROJCS["MGI (Ferro) / Austria GK West Zone",
GEOGCS["MGI (Ferro)",
DATUM["Militar-Geographische Institut (Ferro)",
SPHEROID["Bessel 1841", 6377397.155, 299.1528128,
AUTHORITY["EPSG","7004"]],
TOWGS84[577.326,90.129,463.919,5.137,1.474,5.297,2.4232],
AUTHORITY["EPSG","6805"]],
PRIMEM["Ferro", -17.666666666666668, AUTHORITY["EPSG","8909"]],
UNIT["degree", 0.017453292519943295],
AXIS["Geodetic longitude", EAST],
AXIS["Geodetic latitude", NORTH],
AUTHORITY["EPSG","4805"]],
PROJECTION["Transverse Mercator", AUTHORITY["EPSG","9807"]],
PARAMETER["central_meridian", 28.0],
PARAMETER["latitude_of_origin", 0.0],
PARAMETER["scale_factor", 1.0],
PARAMETER["false_easting", 0.0],
PARAMETER["false_northing", -5000000.0],
UNIT["m", 1.0],
AXIS["Easting", EAST],
AXIS["Northing", NORTH],
AUTHORITY["EPSG","31251"]]
Thorsten Reitz writes:
> Hi all,
>
> I have been working with the StreamingRenderer to render a
> FeatureCollection with SimpleFeatures. The goal is develop a renderer
> which actually renders two different states of the same data in one
> panel. You can see the source code for this here:
> http://www.esdi-community.eu/repositories/entry/hale/Client/src/eu/esdihumboldt/hale/rcp/views/map/SplitRenderer.java
>
>
> Basically, everything is working, with the exception that the data gets
> rendered a bit strange: rotated by 90° and flipped along the X axis.
> Consequently I assumed it might be a problem with the relatively new CRS
> that my data uses (EPSG:31251) and it's Axis definitions, so I directly
> parsed the WKT for that, using the result for the MapContext given to
> the renderer. That did not solve the issue, so I decided to perform a
> transformation of the data to WGS84 first before passing to the renderer
> again; however, this time the render output even remains empty.
>
> Any ideas what might cause, or even better, solve this issue?
>
> Thanks & Best regards,
>
> Thorsten
>
> --
> -------------------------------------------------------------------
> Fraunhofer-Institut
> Graphische Datenverarbeitung
> Fraunhoferstraße 5
> 64283 Darmstadt
>
> Thorsten Reitz
> email: thorsten.re...@igd.fhg.de
> http://www.igd.fhg.de
> -------------------------------------------------------------------
>
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