Oops... I forgot the most important part in my first post. Here are the
edfinitions:
EPSG 3004 - Monte Mario / Italy zone 2:
+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl
+towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +units=m +no_defs
EPSG 102092 - Monte_Mario_Italy_2:
+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl
+units=m +no_defs
3004 works well with my data, while 102092 does not.
There appears to be a relatively large shift, in the order of tens or
hundreds meters,monstly along the north - south direction.
Thanks
Paolo
Il 07/11/2013 00:47, G. Allegri ha scritto:
In QGIS they appear having the same definition, Could you paste the
102092 definition that you have?
giovanni
2013/11/6 Paolo <[email protected] <mailto:[email protected]>>
Hello,
I am a relatively recent QGIS user. I am at the moment using
version 2.0 - Dufour.
I would like to ask a simple question about two different datums I
am experiencing problems with.
They are: EPSG 102092 and EPSG 3004.
Accordinf to my (short) research, they are supposed to be exactly
the same datum, but the definitions in QGIS are different.
If I use 3004, the specific data set I'm using will overlap
properly with the other datasets, but it will not if I use 102092.
Can anybody help me getting a better understanding of this behaviour?
Thanks
Paolo
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Giovanni Allegri
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