[QGIS-trac] Re: [Quantum GIS] #3672: region error when creating a GRASS location?

Quantum GIS qgis at qgis.org
Sun Apr 3 08:24:21 EDT 2011


#3672: region error when creating a GRASS location?
------------------------------------------------+---------------------------
   Reporter:  lutra                             |              Owner:               
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.7.0
  Component:  GRASS                             |            Version:  Trunk        
   Keywords:                                    |   Platform_version:               
   Platform:  All                               |           Must_fix:  Yes          
Status_info:  0                                 |  
------------------------------------------------+---------------------------

Comment(by neteler):

 The reason will be that several datums are associated to EPSG 3003:
 {{{
 g.proj -c epsg=3003 datumtrans=-1 location=loc_epsg_3003
 ---
 1
 Used in whole rome40 region
 towgs84=-225.000,-65.000,9.000
 Default 3-Parameter Transformation (May not be optimum for older datums;
 use this only if no more appropriate options are available.)
 ---
 2
 Used in Italy (Peninsular Part)
 towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68
 Accuracy 3-4m
 ---
 3
 Used in Italy (Sardinia)
 towgs84=-168.6,-34.0,38.6,-0.374,-0.679,-1.379,-9.48
 Accuracy 3-4m
 ---
 4
 Used in Italy (Sicily)
 towgs84=-50.2,-50.4,84.8,-0.690,-2.012,0.459,-28.08
 Accuracy 3-4m
 }}}

 When creating such a new location (the same applies to all projections
 with multiple datum
 choices), the user must be presented with a related datum dialog to choose
 from.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/3672#comment:2>
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