Tutorial examples not working

[jzazo]

Trying the first lines of the readme file do not work:

using GraphPlot
using Graphs

g = graphfamous("karate")
nodelabel = [1:num_vertices(g)]

Gives error:

Closest candidates are:
  num_vertices(!Matched::GenericEdgeList) at /home/javier/.julia/packages/Graphs/GQCid/src/edge_list.jl:27
  num_vertices(!Matched::GenericAdjacencyList) at /home/javier/.julia/packages/Graphs/GQCid/src/adjacency_list.jl:36
  num_vertices(!Matched::GenericIncidenceList) at /home/javier/.julia/packages/Graphs/GQCid/src/incidence_list.jl:47
  ...
top-level scope at network_graph.jl:78

If I try:

nodesize = [Graphs.out_degree(v, g) for v in Graphs.vertices(g)]
gplot(g, nodesize=nodesize)

Gives error:

```MethodError: no method matching vertices(::LightGraphs.SimpleGraphs.SimpleGraph{Int64})
Closest candidates are:
  vertices(!Matched::GenericEdgeList) at /home/javier/.julia/packages/Graphs/GQCid/src/edge_list.jl:28
  vertices(!Matched::GenericAdjacencyList) at /home/javier/.julia/packages/Graphs/GQCid/src/adjacency_list.jl:37
  vertices(!Matched::GenericIncidenceList) at /home/javier/.julia/packages/Graphs/GQCid/src/incidence_list.jl:54
  ...
top-level scope at network_graph.jl:83

[sbromberger]

Graphs.jl is not being actively developed any more. We should update the example in the readme to use LightGraphs.

[sbromberger]

Ref #99

[anandijain]

None of the examples work still, at least for plotting in repl
First example just returns a very long type signature of Compose.Context(...

using LightGraphs: smallgraph
using GraphPlot
g = smallgraph(:karate)
gplot(g)

What can I do to plot graphs?

I'm on Ubuntu 18.04 and I just confirmed that the above example works in IJulia but not repl

[matbesancon]

the way Compose and GraphPlot work is by constructing an object which describes the graph. The simplest way to display it is to use gplothtml which will open it in your browser, or to save the graph as svg / png and open it

[rodrigo-moreno]

I am still unable to run the lines in the tutorials. I have tried running the following code both in the REPL and in Jypyter, with the same error in both instances:

using LightGraphs
using GraphPlots

g = Graph(3, 2)
gplot(g)

The error I get says MethodError: no method matching spring_layout(::SimpleGraph{Int64}). I tried using gplothtml instead, as suggested above, but it gives the same error.

I am on MacOS with Big Sur, with an M1 processor. The versions I installed for LightGraphs and GraphPlots are 1.3.5 and 0.5.0, respectively.

Please, if there is any other relevant information, let me know; this is my first time posting such a thing.

[cyrenehowland]

I am also having this issue and am using Jupyter on MacOS with Monterey with an M1 processor.

[thomasvilches]

Hi everyone!

I was having this issue when trying to plot a watts-strogatz network, and what worked for me was:
`
N = LightGraphs.watts_strogatz(1000,10,0.1) # created the network
MM = LightGraphs.adjacency_matrix(N) #extracted the adjacency matrix
gg = Graphs.SimpleGraph(MM) # created a SimpleGraph based on the adjacency Matrix
gplot(gg) # Plot the network

`

[etiennedeg]

LightGraphs.jl is now archived, you should use Graphs.jl. See here how to make the transition