Top "Igraph" questions

igraph is a free software package for creating and manipulating large undirected and directed graphs.

Adjusting the node size in igraph using a matrix

I have the following network diagram: set.seed(1410) df<-data.frame( "site.x"=c(rep("a",4),rep("b",4),rep("…

r nodes igraph
using graph.adjacency() in R

I have a sample code in R as follows: library(igraph) rm(list=ls()) dat=read.csv(file.choose(),header=…

r graph plot igraph adjacency-matrix
Where are the vertex names in an iGraph graph

My general problem is that I loose the vertex names / labels (not sure about the right word here) when generating …

r igraph bipartite
increasing the distance between igraph nodes

I have a graph that I have produced using igraph. I'd like to spread out the nodes. The only way …

r igraph
How do you build a graph from a data frame using the igraph package?

Any way to build a graph ( igraph package ) from a Data Frame in R ? The data frame contains node relationships. …

r dataframe igraph
pycairo "ImportError: DLL load failed: The specified module could not be found." even after DLLs installed

I'm following the pycairo installation instructions here : http://www.cs.rhul.ac.uk/home/tamas/development/igraph/tutorial/install.html …

python windows-7 igraph pycairo
Best practices for Querying graphs by edge and node attributes in NetworkX

Using NetworkX, and new to the library, for a social network analysis query. By Query, I mean select/create subgraphs …

python networkx igraph
python + igraph "plotting not available"

I installed python-igraph 0.5.4 and igraph 0.5.4 (also tested 0.6) from source on a RHEL machine. All is fine except when I try …

python igraph
How to get vertex ids back from graph

Please consider the following library(igraph) id <- c("1","2","A","B") name <- c("02 653245","03 4542342","Peter","Mary") category <…

r igraph
How to generate a random graph given the number of nodes and edges?

I am using python with igraph library: from igraph import * g = Graph() g.add_vertices(4) g.add_edges([(0,2),(1,2),(3,2)]) print g.…

python random igraph