[GRASS-dev] [GRASS GIS] #2547: v.report: should report stats even if there is no attribute table (or at least fail more gracefully)

[GRASS GIS]

#2547: v.report: should report stats even if there is no attribute table (or at
least fail more gracefully)
-----------------------------------------------------+----------------------
 Reporter:  mlennert                                 |       Owner:  grass-dev@…              
     Type:  defect                                   |      Status:  new                      
 Priority:  normal                                   |   Milestone:  7.0.0                    
Component:  Vector                                   |     Version:  svn-releasebranch70      
 Keywords:  v.report vector_columns attribute table  |    Platform:  Unspecified              
      Cpu:  Unspecified                              |  
-----------------------------------------------------+----------------------
 {{{
 v.net input=streets_wake points=schools_wake output=network
 operation=connect threshold=500
 v.net.alloc input=network output=alloc center_cats=1-9999
 v.report alloc op=lengthTraceback (most recent call last):
   File "/data/home/mlennert/SRC/GRASS/grass70_release/dist.x86_64-unknown-
 linux-gnu/scripts/v.report", line 185, in <module>
     main()
   File "/data/home/mlennert/SRC/GRASS/grass70_release/dist.x86_64-unknown-
 linux-gnu/scripts/v.report", line 70, in main
     colnames = grass.vector_columns(mapname, layer, getDict = False,
 stderr = nuldev)
   File "/data/home/mlennert/SRC/GRASS/grass70_release/dist.x86_64-unknown-
 linux-gnu/etc/python/grass/script/vector.py", line 120, in vector_columns
     **args)
   File "/data/home/mlennert/SRC/GRASS/grass70_release/dist.x86_64-unknown-
 linux-gnu/etc/python/grass/script/core.py", line 427, in read_command
     return handle_errors(returncode, stdout, args, kwargs)
   File "/data/home/mlennert/SRC/GRASS/grass70_release/dist.x86_64-unknown-
 linux-gnu/etc/python/grass/script/core.py", line 310, in handle_errors
     returncode=returncode)
 grass.exceptions.CalledModuleError: Module run None ['v.info', '--q',
 '-c', 'map=alloc', 'layer=1'] ended with error
 Process ended with non-zero return code 1. See errors in the (error)
 output.
 }}}

 I think v.report should just report stat by cat in such a case, but at
 least there should be a graceful exit explaining that an attribute table
 is needed.

 I guess this is as much a bug in vector_columns() in grass.script as it is
 a bug in v.report...

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Ticket URL: <https://trac.osgeo.org/grass/ticket/2547>
GRASS GIS <http://grass.osgeo.org>