[GRASS-user] Re: Update - Check points in polygons

[John C. Tull]

That's great to hear. If there is to be a complaint about open source,  
it would be that there are many great ways to achieve the same result.  
Of course, this is actually a compliment.

You will find the environment that you are most comfortable working in  
and develop your own solutions. If you are comfortable with postgis,  
you can do all of it there as well. That is not something I have done,  
but I know it is possible. You might take a look at this post and  
ferret out the slides from the talk that are available online as well.

http://postgis.refractions.net/pipermail/postgis-users/2007-July/016358.html

Cheers,
John

On Mar 6, 2008, at 2:12 AM, Corrado wrote:
> Thanks a lot to all of you!
>
> To keep you up to date:
>
> METHOD1
> 1) v.in.ogr
> dsn=/home/ct529/Documents/Projects/UKBryophytes/Datasets/BRYOPHYTES/ 
> BRYOPHYTES/SSSI_vectors/ENGLAND.shp
> output=England_SSSI layer=ENGLAND min_area=0.0001 snap=-1
> location=England_from_shapefile
> 2) v.clean input=England_SSSI output=England_SSSI_clean
> error=England_SSSI_error tool=bpol
> 3) v.in.ascii
> input=/home/ct529/Documents/Projects/UKBryophytes/Datasets/ 
> species_sites_100m.csv
> output=species_100m format=point fs=, skip=0 x=4 y=5 z=0 cat=0
> 4) in postgresql: alter table species_100m add colum sssi_name  
> varchar(120);
> 5) v.distance from=species_100m to=England_SSSI dmax=0 upload=to_attr
> to_column=sssi_name col=sssi_name
> 6) in postgresql: select species_name,sssi_name,count(species_id) from
> species_100m where sssi_name is not null group by  
> species_name,sssi_name
> order by species_name;
>
> What do you think? I may now run it on dmax=100 and dmax=500.
>
>
> METHOD2
> Today I am going to try Roger's method, combining GRASS and R ,so  
> that I can
> compare.
>
> METHOD3
> I would like to develop a comparative method using only grass, and  
> reading the
> shape file directly (without going through spgrass6) using readOGR  
> and the
> rgdal library. Any clue?
>
> I think when I wrote back to the project leader that the problem was  
> solved,
> she as rather impressed by GRASS and by the GRASS community.
>
> Best Regards
> -- 
> Corrado Topi
>
> Global Climate Change and Biodiversity
> Area 18,Department of Biology
> University of York, York, YO10 5YW, UK
> Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk