Hi,

Our layer is defined in a local CRS like 31285.

Also the TOWGS84 parameter is set  for correct placement of data in CRS 
4326 (WGS84).

Now the placement in 4326 is correct and false in 31286, if I skip the 
TOWGS84 parameter i have the vice versa effect.

Is there a way that the TOWGS84 transformation is only used when it is 
needed?

Here our layer/projection section:

 PROJECTION
  "proj=tmerc"
  "ellps=bessel"
  "lat_0=0"
  "lon_0=13.33333333333333"
  "k=1.000000"
  "x_0=450000" 
  "y_0=-5000000"
  "units=m" 
  "towgs84=577.326,90.129,463.919,5.1365988,1.4742,5.2970436,2.4232"
 END

or

 PROJECTION
  "init=EPSG:31285"
  "towgs84=577.326,90.129,463.919,5.1365988,1.4742,5.2970436,2.4232"
 END


best regards,

Christian

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AMT DER KÄRNTNER LANDEREGIERUNG 
Abt. 18 - Wasserwirtschaft / IKT 

Ing. Christian MAIRAMHOF 

Völkermarkter Ring 29 , A-9020 Klagenfurt 
Tel +43 (0) 463 536-31826

e-mail: [EMAIL PROTECTED] 
homepage: wasser.ktn.gv.at
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