search for: strogatz

Hi, I have a erdos-renyi game with 6000 nodes and probability 0.003. g1 = erdos.renyi.game(6000, 0.003) How to create a Watts Strogatz game with the same probability. g1 = watts.strogatz.game(1, 6000, ?, ?) What should be the third and fourth parameter to this argument. -- View this message in context: http://r.789695.n4.nabble.com/Watts-Strogatz-game-tp3491922p3491922.html Sent from the R help mailing list archive at Nabble.co...

Hi, I am plotting a graph with kamada.kawai layout. But I am getting direction arrows in the graphs. Please let me know how to avoid this. g <- watts.strogatz.game(1, 2000, 5, 0.4) comps <- clusters(g)$membership colbar <- rainbow(max(comps)+1) V(g)$color <- colbar[comps+1] png(filename) plot(g, layout=layout.kamada.kawai, vertex.size=2, vertex.label=NA) dev.off() Please find attached the figure with arrows.. http://r.789695.n4.nabble.com/...

Dear all, I'm working with a code that consists of two parts: In Part 1 I'm generating a random graph using the igraph library (which represents the relationships between different nodes) and a vector (which represents a certain characteristic for each node): library(igraph) g <- watts.strogatz.game(1,100,5,0.05) z <- rlnorm(100,0,1) In Part 2 I'm iteratively changing the elements of z in order to reach a certain value of a certain target variable. I'm doing this using a while statement: while (target_variable < threshold) {## adapt z} The problem is that in some rare cas...

Hi, good morning, I got following error which looks strange to me while executing this code : > temp <- expand.grid(rep(list(c(1,0)),40)) Error in rep.int(rep.int(seq_len(nx), rep.int(rep.fac, nx)), orep) : invalid 'times' value In addition: Warning message: In rep.int(rep.int(seq_len(nx), rep.int(rep.fac, nx)), orep) : NAs introduced by coercion However if I put a small

...----------- - New graph generators: static.fitness.game(), static.power.law.game(). - barabasi.game() was rewritten and it supports three algorithms now, the default algorithm does not generate multiple or loop edges. The graph generation process can now start from a supplied graph. - The Watts-Strogatz graph generator, igraph_watts_strogatz() can now create graphs without loop edges. Others ------ - Added the Spectral Coarse Graining algorithm, see scg(). - The cohesive.blocks() function was rewritten in C, it is much faster now. It has a nicer API, too. See demo("cohesive"). - Add...

...----------- - New graph generators: static.fitness.game(), static.power.law.game(). - barabasi.game() was rewritten and it supports three algorithms now, the default algorithm does not generate multiple or loop edges. The graph generation process can now start from a supplied graph. - The Watts-Strogatz graph generator, igraph_watts_strogatz() can now create graphs without loop edges. Others ------ - Added the Spectral Coarse Graining algorithm, see scg(). - The cohesive.blocks() function was rewritten in C, it is much faster now. It has a nicer API, too. See demo("cohesive"). - Add...

...code that consists of two parts: In Part 1 I'm generating a random graph using the igraph library (which represents the relationships between different nodes) and a vector (which represents a certain characteristic for each node): library(igraph) g <- watts.strogatz.game(1, 100, 5, 0.05) z <- rlnorm(100, 0, 1) In Part 2 I'm iteratively changing the elements of z in order to reach a certain value of a certain target variable. I'm doing this using a while statement: while (target_variable < threshold) {## adapt z} The...