Re: [igraph] Error with get.shortest.paths but not with shortest.paths in R

[Gábor Csárdi]

Hi,

impossible to say for sure without your data, but note that the
default for the 'mode' argument is different for shortest.paths and
get.shortest.paths.

Gabor

On Mon, Dec 16, 2013 at 3:15 AM,  <address@hidden> wrote:
>
> Hi,
> I have encountered strange behavior using igraph in R.
> shortest.paths command returns correct results, get.shortest.paths returns
> warning and no results.
>
>> shortest.paths(g,v=2795,to=2839) # corect
>       [,1]
> [1,] 3930.4
>> get.shortest.paths(g,from=2795,to=2839) # warning and no results
> [[1]]
> numeric(0)
>
> Warning message:
> In get.shortest.paths(g_novy, from = 2795, to = 2839) :
>  At structural_properties.c:5296 :Couldn't reach some vertices
>
> Does anyone know, whats the problem?
>
> Thanks,
> Zbynek
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