[R-sig-Geo] ogr2ogr for converting postGIS layer to shapefile

[G. Allegri]

Great, I didn't know it... I just made a rapid try some time ago but
it failed because I didn't use the ""

I'm sorry for bothering, how are you using R with CGAL?


2008/3/31, Murray Richardson <murray.richardson at utoronto.ca>:
>
>  See below. Haven't tried this yet.
>
>  Yes that is what CGAL stands for.
>
>  Murray
>
>
>
>
>
>
>  Hi Murray,
>
>  Regarding the first question, you can read into R first and then output
>  it again. You could also call ogr2ogr using a system call like:
>
>  system("ogr2ogr normal syntax stuff")
>
>  cheers,
>  Paul
>
>
>
>  G. Allegri wrote:
>  > Hi Murray.
>  > About the first question. As far as I understand, you're working in R
>  > on a *imported* PostGIS layer (I suppose you use rgdal to do it,
>  > right?). Then you would need to export it to a shapefile (easily done
>  > with writeOGR). Why are you considering the use of ogr2ogr? As you
>  > probably  know, it's a binary callable from a command line, and it's
>  > not possible (AFAIK) to do it from R...
>  >
>  > I dont' understand your second question...
>  >
>  >> Or even better could ogr be used to do this directly on a postGIS layer?
>  >>
>  > What do you mean?
>  >
>  > Giovanni
>  >
>  >
>