Re: [igraph] Nodes at a given distance

[Gabor Csardi]

Marco, do you actually use R? If yes, see ?setdiff.

setdiff is an R function, it is the difference operation between
two sets, it calculates the elements that are in the first set,
but not in the second. Maybe there is something similar in Python,
but you'll have to write it for yourself if you use C. It is not 
hard, just sort both vectors and go over them once to keep the elements 
that are in the first vector only. As always, using a higher level 
language is easier.

Best,
Gabor

On Fri, Jul 25, 2008 at 11:54:45AM +0200, Marco wrote:
> Hi,
> 
> it sounded too great to work straight away: one stupid question arises.
> What is setdiff? :|
> 
> thanks and sorry,
> 
> marco
> 
> 
> 
> -- 
> è il gioco della vita,
> la dobbiamo preparare
> che non ci sfugga dalle dita
> come la sabbia in riva al mare.
> 
> Lucio Dalla
> 
> 
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-- 
Csardi Gabor <address@hidden>    UNIL DGM