[R-sig-Geo] OGR dataset to R

Roger Bivand Roger.Bivand at nhh.no
Tue Dec 6 21:19:56 CET 2005


On Tue, 6 Dec 2005, Edzer J. Pebesma wrote:

> I must correct -- I did manage to compile Rmap after outcommenting
> the line
> 
> SHAPE = -lshp
> 
> in Rmap/src/Makevars

Yes, I can confirm this, building against gdal and proj works for me too, 
as does Barry's nice subsetting. So maybe your database link will be quite 
good - the [.ogr function makes an ogr object for the subset, and only 
when you do as.data.frame() og the ogr object does the data get read into 
R.

Roger

> --
> Edzer
> 
> Jean-Denis Giguere wrote:
> 
> >Hi all,
> >
> >I would like to know if someone is aware of project to import OGR dataset
> >into R without using GRASS. I saw reryference to OGR on r-spatial project page
> >but didn't find if there was implemented functionnalities.
> >
> >My first goal is to be able to load a part of points dataset using attribute
> >query filter (SQL) and use this as import for points pattern analysis.
> >
> >Since my first dataset will be store within postGIS, hints or pointers to up
> >to date information about integration of PostgreSQL and R would also be very
> >much appreciated.
> >
> >Regards,
> >
> >Jean-Denis
> >
> >	[[alternative HTML version deleted]]
> >
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> >
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no




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