Projection problem Mapserver/Geoserver/Geotools

[Wim Blanken]

Hello List,

 

Maybe a bit off topic but I cannot choose one simple list for this one...

 

The following projection problem. In the Netherlands we have a projection
system that is based on double_stereographic (sterea).

In the proj list there was a flaw with the settings for the EPSG:28992 code.
I did not see it until I played around with google earth in combination with
mapservices.

The alignment is wrong (about 80 meters north and twenty east)

I believe Jan Hartman from the Netherlands also encountered this problem. In
mapserver It can easily be repaired by changing the +proj=stere with
+proj=sterea.   

 

So the proj string becomes:

 

 

# Amersfoort / RD New

<28992> +proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889
+k=0.999908 +x_0=155000 +y_0=463000 +ellps=bessel +units=m
+towgs84=565.2369,50.0087,465.658,-0.406857330322398,0.350732676542563,-1.87
03473836068,4.0812 +no_defs <>

 

 

But Geoserver does not use these proj settings. It uses a WKT list. Has
anybody any ideas about changing the settings below as that it is the same
as the proj. string above? By changing the false easting and northing
parameters I can align them reasonably good., But I think that is not the
solution. Is it?

 

 

28992=PROJCS["Amersfoort / RD
New",GEOGCS["Amersfoort",DATUM["Amersfoort",SPHEROID["Bessel
1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],AUTHORITY["EPSG","62
89"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532
9251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4289"]],PROJECTION["O
blique_Stereographic"],PARAMETER["latitude_of_origin",52.15616055555555],PAR
AMETER["central_meridian",5.38763888888889],PARAMETER["scale_factor",0.99990
79],PARAMETER["false_easting",155000],PARAMETER["false_northing",463000],UNI
T["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","28992"]]

 

 

Greetings,

 

Wim Blanken

The Netherlands

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