Re: [R] Spatial Overlay - SQL - Geoprocessing

From: Roger Bivand <Roger.Bivand_at_nhh.no>
Date: Sat, 24 May 2008 12:59:40 +0000 (UTC)

Paulo Cardoso <pecardoso <at> netcabo.pt> writes:

>
> Can we by any change perform in R something similar geoprocessing or, more
> advanced, Spatial SQL over vectorial data?

Please visit the Spatial task view on your nearest CRAN mirror, which gives some details of useful resources. Consider using the R-sig-geo list to follow up this question.

You can do SQL selection on some external data sources using OGR mechanisms in the rgdal package, but I think that you will find that careful design of your workflow will show what needs to be done using GIS jargon (like geoprocessing), and what can be conveniently done using R functions, classes and methods. Try not to look for exact equivalents, but sketch the workflow to exploit what R is good at.

Roger

>
> Paulo
>



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