[GRASS-dev] Re: [GRASS GIS] #670: add support for alternative coordinates

[GRASS GIS]

#670: add support for alternative coordinates
--------------------------+-------------------------------------------------
  Reporter:  timmie       |       Owner:  martinl                            
      Type:  enhancement  |      Status:  assigned                           
  Priority:  normal       |   Milestone:  6.5.0                              
 Component:  wxGUI        |     Version:  svn-develbranch6                   
Resolution:               |    Keywords:  map display, preferences, workspace
  Platform:  Linux        |         Cpu:  x86-32                             
--------------------------+-------------------------------------------------
Comment (by hamish):

 Replying to [comment:9 timmie]:
 >    - it loads like: +proj=utm +zone=24 +south +ellps=aust_SA +units=m
 +no_defs  <>
 > which doesn't work unless modified to +proj=utm +zone=24 +south
 +ellps=aust_SA +units=m +no_defs

 "+no_defs" might also be removed, I am not really sure if it does anything
 anymore. You may study Gerald's comments on the PROJ.4 list as to its
 original purpose:
 http://search.gmane.org/?query=no_defs&author=gerald&group=gmane.comp.gis.proj-4.devel&sort=date


 >     - pelase enable to display the coordinates in decimal numbers: -f
 '%.8f'

 FWIW in the tcltk gis.m GUI, D.DDD, DM.MMM, or DMS.SSS format in the map
 display's status bar is now controlled by "dms_format" variable in
 mapcanvas.tcl.
 {{{
 # FIXME:  make this settable from the UI or use GRASS_DMS_FORMAT enviro
 var
         # DMS format: 0 is ddd.dddddd,  1 is ddd:mm.mmmm', 2 is
 ddd:mm'ss.sss"
         set dms_format 2
 }}}

 not sure if that variable should idealy be a g.gisenv GRASS variable or a
 shell environment variable.

 I only went to %.6f for D.DDDDDD there because this is a GUI and it is not
 very approrpiate to claim millimeter ground precision from a screen
 pixel+mouse click. Similar just to %.3f for planimetric locations.


 also, if using Swig, G_format_northing() etc can now accept projection
 type of -1 to force decimal output.


 Hamish

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/670#comment:10>
GRASS GIS <http://grass.osgeo.org>