[GRASS-dev] v.select: creation primary key / indexing

Markus Neteler neteler at osgeo.org
Fri Sep 26 07:09:48 PDT 2014


On Tue, Sep 23, 2014 at 9:45 PM, Markus Neteler <neteler at osgeo.org> wrote:
> On Tue, Sep 23, 2014 at 7:52 PM, Paulo van Breugel
> <p.vanbreugel at gmail.com> wrote:
>> I just had a case in which I created a new point layer by selecting a subset
>> of points with v.select. I subsequently added a column and used v.what.rast
>> to upload raster values for the points.
>>
>> The point layer has 2 million points and the v.what.rast took a very long
>> time to update the vector attributes.
>>
>> As it turns out, this is because the attribute table is without primary key.
>> After adding the primary key the v.what.rast took only a minute or so.
>> So the question is, would it be an idea to have the v.select create an
>> primary key for the cat column automatically?
>
> Good catch.

I have fixed it in r62093 (trunk) and r62094 (relbr7).

Markus


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