[GRASS-user] v.out.ascii with vector created by v.net.allpairs

[Johannes Radinger]

On Wed, Jan 30, 2013 at 4:51 PM, Markus Metz
<markus.metz.giswork at gmail.com> wrote:
> On Wed, Jan 30, 2013 at 3:28 PM, Johannes Radinger
> <johannesradinger at gmail.com> wrote:
>> Hi,
>>
>> I performed an analysis to get the distances between single points
>> within a network using v.net.allpairs. As a result a point vector is
>> created containing following information in the attribute table:
>>
>> for example
>>
>> cat,to_cat,cost
>> 1,1,0
>> 1,2,12
>> 1,3,10
>> 2,1,12
>> 2,2,0
>> 2,3,17....
>>
>> .... so there are actually several lines associated with the same cat
>> value
>
> This has been changed in GRASS 7. Here, the attribute table has the
> entries cat, from_cat, to_cat, cost, cat is unique and the category of
> a shortest path.
>
>
>> However, when I try to export the table
>> into a text file using v.out.ascii only one line per cat is
>> exported... How can I export
>> the whole table as shown in attribute table of the vector?
>
> You could try db.select and feed the output to another datatbase.

I though about creating manually a new from_cat column using
v.db.update to get the values from cat to from_cat and then assigning
new unique cat values to the cat column (with v.db.*??)

Johannes


>
> Markus M