On Thu, Oct 10, 2013 at 11:27 AM, Laís Mozzaquattro <[email protected]>wrote: [...]
> > length(E(forqueta.ligeiro.contra.fluxo)) > [1] 15 > > length(E(forqueta.ligeiro.contra.fluxo)$weights) > [1] 15 > > Where should be the problem? > Thank you. > The attribute is named 'weight', not 'weights'. Maybe this is the problem, although you did not show us what is in forqueta.ligeiro.contra.fluxo, so I don't know what is in E(...)$weight. Gabor > > > *Laís Bohrer Mozzaquattro > Bacharel em Ciências Biológicas, ênfase em Gestão Ambiental Marinha e > Costeira > Mestranda em Ecologia - UFRGS* > > > 2013/10/9 Laís Mozzaquattro <[email protected]> > >> Thank you very much! >> >> *Laís Bohrer Mozzaquattro >> Bacharel em Ciências Biológicas, ênfase em Gestão Ambiental Marinha e >> Costeira >> Mestranda em Ecologia - UFRGS* >> >> >> 2013/10/9 Gábor Csárdi <[email protected]> >> >>> Hi, e.g. >>> >>> E(forqueta.ligeiro)$weight <- rowSums(custos, na.rm=TRUE) >>> >>> or you can create the graph with edge weight in the first place, from a >>> data frame, using graph.data.frame(). See >>> >>> ?"igraph-package" >>> ?graph.data.frame >>> ?set.edge.attribute >>> ?E >>> >>> for details. >>> >>> Gabor >>> >>> >>> >>> >>> On Wed, Oct 9, 2013 at 2:22 PM, Laís Mozzaquattro <[email protected] >>> > wrote: >>> >>>> I'm new in igraph and R and i'm having some trouble to add weights is >>>> edges on a graph that I created. The only way that I found to do it is by >>>> adding it one by one, like this: >>>> >>>> forqueta.ligeiro[1,2,attr="weight"]<-sum(custos[1,],na.rm=T) >>>> forqueta.ligeiro[2,3,attr="weight"]<-sum(custos[2,],na.rm=T) >>>> forqueta.ligeiro[3,4,attr="weight"]<-sum(custos[3,],na.rm=T) >>>> >>>> and so on... >>>> >>>> My problem is that I have a big graph, with at least 90 edges, and I >>>> want to know if there's a more automatic way to do it, like inserting a >>>> vector with all my weight on the edges of a graph. >>>> >>>> Thank you! >>>> >>>> *Laís Bohrer Mozzaquattro >>>> ** >>>> * >>>> >>>> _______________________________________________ >>>> igraph-help mailing list >>>> [email protected] >>>> https://lists.nongnu.org/mailman/listinfo/igraph-help >>>> >>>> >>> >>> _______________________________________________ >>> igraph-help mailing list >>> [email protected] >>> https://lists.nongnu.org/mailman/listinfo/igraph-help >>> >>> >> > > _______________________________________________ > igraph-help mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/igraph-help > >
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