[QGIS-trac] [Quantum GIS] #1687: Measure tool is very wrong

[Quantum GIS]

#1687: Measure tool is very wrong
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   Reporter:  kwilliams4                        |              Owner:  nobody
       Type:  bug                               |             Status:  new   
   Priority:  major: does not work as expected  |          Milestone:        
  Component:  Build/Install                     |            Version:  1.0.0 
   Keywords:                                    |   Platform_version:        
   Platform:  Debian                            |           Must_fix:  No    
Status_info:  0                                 |  
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 I have a shapefile that has a projection of World Mercator (EPSG:54004).

 My view is set with the same coordinate system.  My measurement units are
 set at meters.  (Both of which should hopefully be set automatically, but
 neither are when adding the data to a new map.)

 When I measure across the width of the continent of the united states, I
 get a distance of about 1.8 kilometers!  That is obviously incredibly
 wrong!  As currently implemented, the measure tool is completely useless.
 This isn't just a metric versus imperial issue.  It's 100% completely off.
 For QGIS to be considered even a decent viewer for GIS data the measure
 tool at least ought to work as it says it should.

 I'm using Ubuntu 9.04 with QGIS 1.0.1 installed from the proper
 repository.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/1687>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats