[GRASS-user] mysterious error (WARNING: Cannot open old vector on level 2)

[Jarosław Jasiewicz]

Dylan Beaudette napisał(a):
> On Wednesday 22 November 2006 17:53, Hamish wrote:
>   
>> Henry House wrote:
>>     
>>> I'm having mysterious errors trying to use various modules in my
>>> database (GRASS 6.1 running on Debian), which contains mapsets
>>> PERMANENT and hajhouse.
>>>
>>> example:
>>>    GRASS 6.1.cvs (sacramento_sanjoaquin):~/grass > ps.map
>>>    in=Scripts/psmap_script output=out.ps
>>>
>>>    WARNING: Cannot open old vector soil at hajhouse on level 2
>>>    ERROR: soil in hajhouse : can't open vector file
>>>
>>> g.list vect reports:
>>>    vector files available in mapset hajhouse:
>>>    soil
>>>
>>>    vector files available in mapset PERMANENT:
>>>    cont_10      cty_bounds   hydro        plsa         rd_local
>>>    rd_state
>>>    rd_usa       soilmu_a_sac soilmu_l_sac soilmu_p_sac soilsa_a_sac
>>>    soilsf_l_sac
>>>    soilsf_p_sac urban
>>>
>>> Trying to use v.out.ogr fails with the same error. Trying to display a
>>> layer in QGIS (via grass plugin) fails with a rather unhelpful error
>>> that the layer is not a valid layer. The error presented is the same
>>> for soilmu_a_sac at PERMANENT and soil at hajhouse but some other layers in
>>> this database work fine with all GRASS modules. All the layers
>>> including the problematic ones display fine in the GRASS GIS manager,
>>> however.
>>>
>>> What is puzzling and frustrating about this is that it worked fine a
>>> month or so ago.  Then I set work in GRASS aside for a month and now
>>> that I have resumed the errors are here.  I have not altered my GRASS
>>> binaries or support files in the meanwhile, and AFAIK my OS library
>>> versions have not been updated either.
>>>       
>> rebuilt topology with:
>>
>> v.build soils
>>   or
>> v.build.all   # to rebuild all vector maps in current mapset
>>
>> then it should work again.
>>
>> (unless files are totally corrupt on the disk)
>>
>>
>> Hamish
>>
>> _______________________________________________
>> grassuser mailing list
>> grassuser at grass.itc.it
>> http://grass.itc.it/mailman/listinfo/grassuser
>>     
>
> Hi Henry!
>
> I have encountered this type of error when digitizing GRASS vectors in QGIS- 
> and something bizzare happens. Normally re-building the topology with v.build 
> solved the problem. 
>
> Another question- are you working with the latest NRCS SSURGO database? If you 
> would like some notes on importing all of the tabular data into postgres let 
> me know and I can send my notes.
>
> Cheers,
>
>   
1. this error also heppens when you create file and leave it empty - it 
is normal - no topology can be build
2. I also had a problem with vectors after editing with qgis (file 
totally corupted v.build not helped). So I resign to use qgis as a 
editor for grass vector. I see, more people has the same problem