[QGIS-trac] Re: [Quantum GIS] #2385: Italian Sardinia custom proj is wrong

[Quantum GIS]

#2385: Italian Sardinia custom proj is wrong
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        Reporter:  lucacasagrande      |         Owner:  timlinux     
            Type:  bug                 |        Status:  reopened     
        Priority:  minor: annoyance    |     Milestone:  Version 1.5.0
       Component:  Projection Support  |       Version:  HEAD         
      Resolution:                      |      Keywords:  proj, epsg   
Platform_version:                      |      Platform:  Debian       
        Must_fix:  Yes                 |   Status_info:  0            
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Changes (by lucacasagrande):

  * status:  closed => reopened
  * resolution:  fixed =>

Comment:

 I noticed that towgs84 parameters are not right for Italy. According to
 GRASS those are the right ones:

 ROMA40 Fuso 1 Peninsular
 +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,-9.9,0.971,-2.917,0.714,-11.68 +no_defs

 ROMA40 fuso 2 Peninsular
 +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

 ROMA 40 Sardinia
 +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
 +units=m  +towgs84=-168.6,-34.0,38.6,-0.374,-0.679,-1.379,-9.48 +no_defs

 ROMA 40 Sicily
 +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
 +units=m +towgs84=-50.2,-50.4,84.8,-0.690,-2.012,0.459,-28.08 +no_def

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/2385#comment:2>
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