[R-sig-Geo] Point in Polygon Overlay Memory Error

[Roger Bivand]

On Mon, 25 Aug 2014, Francesco Tonini wrote:

> Dear all,
>
> I keep getting a memory error (vector too big) when overlaying hundreds of 
> thousands of points with a polygon layer. The computer I am running this on 
> is quite powerful, thus the error is just internal to R because of reaching a 
> vector allocation too big in size. Is there any workaround to execute this 
> operation? My goal is to overlay several point onto a habitat polygon layer, 
> and remove all points falling outside that polygon.

Please recall that nobody can see over your shoulder. Always state the 
output of sessionInfo(), the code causing the error, the output of 
traceback() after the error, and some details of the objects concerned 
(counts of points, for example). Are you for example using over() methods 
from the sp package?

Powerful may also be misconfigured, so available RAM and any adjustments 
you have made to R defaults should be declared.

Do read the posting guide!

Roger

>
> Any help is much appreciated.
>
> Thank you,
> Francesco
>
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-- 
Roger Bivand
Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; fax +47 55 95 91 00
e-mail: Roger.Bivand at nhh.no