[GRASS-user] Re: Add-ons of SVN; install through SVN or UbuntuGIS?

[Markus Metz]

Patrick Schirmer wrote:
> v.vect.stats fits perfect to what I was looking for. Thanks a lot! Am using
> the GRASS-Version 6.4 coming out of UbuntuGIS(unstable) and didn't know
> about additional tools in the SVN that could be implemented.

See
http://grass.osgeo.org/wiki/GRASS_AddOns

g.extension in GRASS6.4.0RC7 should be able to install add-ons, not
sure about RC6

> I guess the
> repository is not the latest version of GRASS, though.
> That leads to a more general question installation practice for GRASS on
> Ubuntu. It seemed the simpliest way to install it though the
> UbuntuGIS-repository (apt-get/synaptics). An installation through the
> svn-branch would be more up-to-date, but this becomes a local installation
> and compatibility with the rest of my System would not be checked (please
> correct me if I am wrong here).

You should remove the older GRASS version installed from the
UbuntuGIS-repository first, if you want to install e.g. a generic
weekly snapshot from here
http://grass.osgeo.org/grass64/binary/linux/snapshot/

Markus M


> What is your experience on this and what
> would be best-practice for a non-developer? Maybe somebody of the developers
> also knows how often the UbuntuGIS(unstable) repository is being updated
> concerning GRASS. This seems to be a relevant question for people who want
> to start with GRASS, as I just did.
>
> Thanks and kind regards,
>
> Patrick
>
>
>
>
> Markus Metz wrote:
>>
>> Patrick_schirmer wrote:
>>
>>>
>>> Dear all,
>>>
>>> Unfortunately I am not really used to work with GRASS so this might be a
>>> rookie-question. But I am not able to solve it alone, don't find any hint
>>> on
>>> the net and thus will need your help:
>>> I got a map of polygones and a map of points. My aim is to sum up the
>>> attributes of a defined column in the point-map to the polygone where
>>> they
>>> are lying in. So what I am looking for is a function saying 'spatial
>>> join'
>>> of polygons and points with the options 'contains' by using the function
>>> 'sum'. The only thing I can find will be v.what.vect. which will allow to
>>> give the point the value of the polygone, but not the other way round.
>>>
>>> Is there a simple solution to that question within GRASS6.4? (I think
>>> QGIS
>>> is having this option, but I would like to solve it within GRASS6.4).
>>>
>>>
>>
>> Try v.vect.stats from grass-addons, this would do the job in one step,
>> optionally updating polygon attributes with statistics calculated on
>> point attributes per polygon.
>>
>> svn checkout https://svn.osgeo.org/grass/grass-addons/vector/v.vect.stats
>>
>> Markus M
>>
>>
>
>