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

[Murray Richardson]

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
>
>