[Qgis-developer] Errors in Italian new spatial ref sys?

Niccolo Rigacci qgis at rigacci.org
Thu Feb 4 03:43:38 EST 2010


yesterday I downloaded the srs.db from Qgis SVN, I was looking 
for the new Italian srs added some days ago.

It seems to me that there are errors into the proj parameters:

*) For Italy Sardinia the "towgs84" is repeated twice.
*) Somewhere there are spaces after the decimal dot and after the 
   minus sign
*) For Sicily I have a different "towgs84" formula, which is:

Please can someone confirm that before I open a ticket?

Here it is what I read from the srs.db:

SELECT srs_id, description, parameters, epsg FROM tbl_srs WHERE 
srs_id >= 3640 AND srs_id <= 3643;

3640|Italy mainland zone 1 GB Roma40|+proj=tmerc +lat_0=0 
+k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +units=m 
1,-9.9,0.971,-2.917,0.714,-11.68 +no_defs|40000

3641|Italy mainland zone 2 GB Roma40|+proj=tmerc +lat_0=0 
+lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl +units=m 
+towgs84=-104.  1,-
49.1,-9.9,0.971,-2.917,0.714,-11.68 +no_def|40001

3642|Italy Sardinia GB Roma40|+proj=tmerc +lat_0=0 +lon_0=9 
+k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +units=m 
+towgs84=-104.1,-49.1,- 9.9

3643|Italy Sicily GB Roma40|+proj=tmerc +lat_0=0 +lon_0=9 
+k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +units=m 
.374,-0.679,-1.379,-9.48 +no_defs|40003

Niccolo Rigacci
Firenze - Italy

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