Re: [Gdal-dev] gdalwarp - from Monte_Mario_Italy_1 to ETRF_1989_UTM_Zone_32N - offset ca. 120 m

[Helmut Kudrnovsky]

hi markus, hi frank,

thanks for the tip, everything worked well .... i merged the data shift info in the wkt-file and gdal did the job perfectly :o)

helli

>>Markus Neteler wrote:
>> helli,
>>
>> you are lacking the datum information for Monte Mario:
>> (grep'ed from GRASS):
>>
>> rome40 "towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68" "Italy (Peninsular Part)" "Accuracy 3-4m"
>> rome40 "towgs84=-168.6,-34.0,38.6,-0.374,-0.679,-1.379,-9.48" "Italy (Sardinia)" "Accuracy 3-4m"
>> rome40 "towgs84=-50.2,-50.4,84.8,-0.690,-2.012,0.459,-28.08" "Italy (Sicily)" "Accuracy 3-4m"
>>
>> which needs to be added as additional parameter.

>I would add that the datum shift info can be merged into the Well Known Text
>.prj file. I assume the above parameters apply to D_Monte_Mario in which
>case source.prj might look like:

>PROJCS["Monte_Mario_Italy_1",
>GEOGCS["GCS_Monte_Mario",
>DATUM["D_Monte_Mario",
>SPHEROID["International_1924",6378388.0,297.0],
>TOWGS84[-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68]],
>PRIMEM["Greenwich",0.0],
>UNIT["Degree",0.0174532925199433]],
>PROJECTION["Transverse_Mercator"],
>PARAMETER["False_Easting",500000.0],
>PARAMETER["False_Northing",-5000000.0],
>PARAMETER["Central_Meridian",9.0],
>PARAMETER["Scale_Factor",0.9996],
>PARAMETER["Latitude_Of_Origin",0.0],
>UNIT["Meter",1.0]]

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