[Qgis-user] projection problem

eufass at tiscali.it eufass at tiscali.it
Wed May 30 01:24:43 PDT 2012


The Projection of my project is UTM32WGS (EPSG 32632)
Enable on the fly 
projection

 if I load shapefile MonteMario (EPSG 3003) with 
parameters: 

+proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 
+y_0=0 +ellps=intl +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 
+units=m +no_defs
the error is 70 meters


 if I load shapefile  with 
SR personalized with the same parameters: 

+proj=tmerc +lat_0=0 
+lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl +towgs84=-104.1,
-49.1,-9.9,0.971,-2.917,0.714,-11.68 +units=m +no_defs
the error is 1 
meter

why?

thanks
Eugenio 


Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/



More information about the Qgis-user mailing list