[GRASS-dev] Re: [GRASS GIS] #785: wx location wizard: doesn't show all datum transform opts

[GRASS GIS]

#785: wx location wizard: doesn't show all datum transform opts
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  Reporter:  hamish    |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect    |      Status:  new                      
  Priority:  critical  |   Milestone:  6.4.0                    
 Component:  wxGUI     |     Version:  svn-develbranch6         
Resolution:            |    Keywords:  location wizard          
  Platform:  Linux     |         Cpu:  x86-64                   
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Comment (by cmbarton):

 Question. If I run g.proj with datumtrans=-1 for a UTM zone 3 NAD83, I get
 the following list below. The first 'transformation' is a default non-
 transform and in the datum.table. The remaining 5 transformations are in
 the datumtransform.table.

 If none of the transforms 2-6 are specified, will transform #1 (the
 default) be used?

 Michael

 ---
 1
 Used in whole nad83 region
 towgs84=0.000,0.000,0.000
 Default 3-Parameter Transformation (May not be optimum for older datums;
 use this only if no more appropriate options are available.)
 ---
 2
 Used in Florida
 nadgrids=FL
 Transforms 'Old NAD83' to 'HPGN NAD83'
 ---
 3
 Used in Maryland
 nadgrids=MD
 Transforms 'Old NAD83' to 'HPGN NAD83'
 ---
 4
 Used in Tennessee
 nadgrids=TN
 Transforms 'Old NAD83' to 'HPGN NAD83'
 ---
 5
 Used in Wisconsin
 nadgrids=WI
 Transforms 'Old NAD83' to 'HPGN NAD83'
 ---
 6
 Used in Washington - Oregon
 nadgrids=WO
 Transforms 'Old NAD83' to 'HPGN NAD83'
 GRASS 6.5.svn (Spearfish60_test):~ > c

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Ticket URL: <http://trac.osgeo.org/grass/ticket/785#comment:5>
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