[QGIS-trac] Re: [Quantum GIS] #1433: measurements and scale broken in latlon

[Quantum GIS]

#1433: measurements and scale broken in latlon
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        Reporter:  msieczka                          |         Owner:  timlinux                                      
            Type:  enhancement                       |        Status:  closed                                        
        Priority:  major: does not work as expected  |     Milestone:  Version 1.2.0                                 
       Component:  Projection Support                |       Version:  HEAD                                          
      Resolution:  duplicate                         |      Keywords:  scale, projections, measure line, measure area
Platform_version:                                    |      Platform:  All                                           
        Must_fix:  Yes                               |   Status_info:  0                                             
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Changes (by homann):

  * priority:  critical: causes crash or data corruption => major: does not
               work as expected
  * status:  new => closed
  * resolution:  => duplicate
  * type:  bug => enhancement

Comment:

 I don't know how many bugs I have seen submitted on this issue.

 If OTF is off, the selector sets the unit of the source layer. So, if you
 change from feet to meter, the reading should be the same.

 So a)and c) is not a bug.

 In b) and d), changing the map scale with OTFP enabled DOES NOT
 recalculare the resulting areas/distances from meters to feet.

 Map scale is a plugin, so behaves differently. It might be buggy.



 Simple rule: If OTFP is off, there is no relation between the data in the
 file and any physical size in the real world. Every distance and area is
 unitless, and the unit selector only slaps on the chosen unit as a
 friendly

 QGIS does not crash, and the data files does not get destroyed.

 Please suggest a way how it *should* behave on the dev mailing list.

 See also #1219 (and #1313 and #1687).

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Ticket URL: <http://trac.osgeo.org/qgis/ticket/1433#comment:10>
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