[GRASS-user] empty results from v.distance

[Ken Mankoff]

Ah nevermind - I thought that all of the areas had values in the ID column, but that was incorrect, which is why the points vector was not fully populated.

Thanks for helping me debug this.

  -k.

On 2022-05-20 at 21:27 -07, Ken Mankoff <mankoff at gmail.com> wrote:
> Hello GRASS list,
>
> I'm running v.distance because I'd like to assign the nearest area ID
> to a points vector. Some of the points are outside any areas.
>
> I'm using this command:
>
> v.distance from=points to=areas upload=to_attr column=c to_column=ID
> output=connections
>
> And I'd like to see a new column "C" in the points table that contains
> the ID from the nearest area in areas.
>
> If I plot points, areas, and connections, it appears that every point
> is connected to an area. But if I `db.select points|head`, many rows
> in the ID column are empty. I would not expect any to be empty. Can
> someone explain what I might be doing wrong?
>
> Thank you,
>
>   -k.