[GRASS-user] add a centroid in the center of polygon

[Markus Metz]

On Sat, Jan 25, 2014 at 12:27 PM, Markus Neteler <neteler at osgeo.org> wrote:
> On Sat, Jan 25, 2014 at 12:08 PM, Markus Metz
> <markus.metz.giswork at gmail.com> wrote:
>> On Sat, Jan 25, 2014 at 12:10 AM, Milton Ribeiro
>> <miltinho.astronauta at gmail.com> wrote:
>>> Dear all,
>>>
>>> I have a polygon vector, and need to add point in the center of mass of each
>>> one.
>>> I used v.centroid, but it adds just a centroid, but not in the central
>>> position of the polygon area.
>>
>> v.centerpoint from addons [0] does that.
>>
>> Markus M
>>
>> [0] http://grasswiki.osgeo.org/wiki/AddOns/GRASS7/vector#v.centerpoint
>
> Right, I forgot about this nice addon!
> Perhaps its functionality might be merged into v.centroids [1]?

No, because the center of mass is not always within the area.

Markus M
>
> markusN
>
> [1] http://grass.osgeo.org/grass70/manuals/v.centroids.html