Werner-
prj files generated by ERSI products generally lack TOWGS parameters
(see EPSG:1618, CoordinateTransformation, http://www.epsg-registry.org).
Maybe this is solved in ARCGIS 9.3.
As Albin suggested you can try to use this prj file.
PROJCS["Austria_MGI_M34",GEOGCS["GCS_MGI",DATUM["D_MGI",SPHEROID
["Bessel_1841",6377397.155,299.1528128],TOWGS84
[577.326,90.129,463.919,5.137,1.474,5.297,2.4232]],PRIMEM["Greenwich",
0.0],UNIT["Degree",0.0174532925199433]],PROJECTION
["Transverse_Mercator"],PARAMETER["False_Easting", 750000.0],PARAMETER
["False_Northing",-5000000.0],PARAMETER["Central_Meridian",
16.33333333333334],PARAMETER["Scale_Factor",1.0],PARAMETER
["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]
A recent version of proj4 will have EPSG:31259 including towgs
parameters, at least on my system (Mac OS X).
GDAL 1.6.0, released 2008/12/04
PROJ.4, Rel. 4.6.1, 21 August 2008
+init=epsg:31259 +proj=tmerc +lat_0=0 +lon_0=16.33333333333333
+k=1 +x_0=750000 +y_0=-5000000 +ellps=bessel
+towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232 +units=m
+no_defs
Hope this helps.
Roland
BTW, don't trust prj files delivered by Austrian Government!
Thx for your answers!
But .. I assume a delivered projection file as correct - and you
did not say that government fails or the projection is wrong ..
The provided .prj from you are really nice - but i guess in fact it
does not solve the problem.
I just wanted to know where the problem is to investigate it..
Are the .prj files wrong?
does gdal/ogr something strange?
is qgis acting wrong?
so wheres the real problem behind this all?
thx for your hints
regards
Werner
Hello,
I had also problems with ESRI-generated .prj - Files for Austria
(in my
case M31) - I solved it by manually editing the .prj - File
respectively
using those I have attached...
See also the following page: http://www.alectoria.at/content/view/
17/1/
HTH,
Albin
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