[GRASS-dev] Re: [GRASS GIS] #377: gis.m/Map Display fails to handle vector layers with multiple databse layers

Michael Barton michael.barton at asu.edu
Sun Dec 28 12:09:22 EST 2008



On Dec 28, 2008, at 7:14 AM, Moritz Lennert wrote:

> On Fri, December 26, 2008 18:17, Michael Barton wrote:
>>
>>
>> On Dec 26, 2008, at 9:59 AM, GRASS GIS wrote:
>
> [...]
>
>>> well, and archsites at PERMANENT contains some elements in layer 2?
>>>
>>> {{{
>>> v.category archsites at PERMANENT opt=report
>>> }}}
>>>
>>> ?
>>
>> Yes. I essentially duplicated the dbf for layer 1 and connected the
>> new dbf as layer 2, so I know it should be OK.
>
> Duplicating the dbf and connecting it (with v.db.connect) to another
> layer, does not create any features on that layer. To do that, you  
> have to
> assign category values to features in that layer, with either  
> v.category
> or v.digit.
>
> I think there is still a need to a much clearer and more detailed  
> tutorial
> on layer handling, as this keeps popping up...
>
> Moritz

You're right. I forgot to do this step.

Michael



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