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## Re: [igraph] a problem with simplify()

**From**: |
Gábor Csárdi |

**Subject**: |
Re: [igraph] a problem with simplify() |

**Date**: |
Thu, 21 Oct 2010 18:43:49 +0200 |

Hi Simone,
it should not be a problem, but it still is. simplify() is a single
function, and it does not keep the edge attributes, whatever its
arguments are. At least not in the 0.5 version, the 0.6 version is
already better.
A workaround is to use is.loop() and delete.edges(), this keeps all attributes.
Best,
Gabor
On Thu, Oct 21, 2010 at 5:06 PM, Simone Gabbriellini
<address@hidden> wrote:
>* Hello List,*
>
>* I am trying to simplify my graph, which has loops and has no multiple edge. *
>* the graph has vertex and edges attributes,*
>* Using:*
>
>* g<-simplify(g, remove.multiple=FALSE, remove.loops=TRUE)*
>
>* I end up with a graph that has no edge attributes...*
>
>* Vertices: 389*
>* Edges: 481*
>* Directed: TRUE*
>* No graph attributes.*
>* Vertex attributes: name, starttime, endtime, nodesize, nodeshape, colorname.*
>* No edge attributes.*
>
>* Since I specified remove.multiple = FALSE, the edge attributes shouldn't be a *
>* problem, or is there something I'm missing?*
>
>* thanks,*
>* simone*
>* _______________________________________________*
>* igraph-help mailing list*
>* address@hidden*
>* http://lists.nongnu.org/mailman/listinfo/igraph-help*
>
--
Gabor Csardi <address@hidden> UNIL DGM

**[igraph] a problem with simplify()**, *Simone Gabbriellini*, `2010/10/21`
**Re: [igraph] a problem with simplify()**,
*Gábor Csárdi* **<=**
**Re: [igraph] a problem with simplify()**, *Simone Gabbriellini*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Tamas Nepusz*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Tamas Nepusz*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Gábor Csárdi*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Simone Gabbriellini*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Gábor Csárdi*, `2010/10/21`
**Re: [igraph] a problem with simplify()**, *Simone Gabbriellini*, `2010/10/21`