Generate Erdos-Renyi graphs with Graphviz

I'm trying to generate ER graphs using Graphviz from file exchang and I'm getting these errors for these functions:

Error using textread (line 162)

File not found.

Error in dot_to_graph (line 33)

lines = textread(filename,'%s','delimiter','\n','commentstyle','c'); % Read file into cell array of lines

Error in draw_dot (line 22)

[trash, names, x, y] = dot_to_graph(tmpLAYOUT); % load NEATO layout

Error in ggwp (line 6)

[x,y] = draw_dot(G);

My input:

n = 150;

p = log(n)/n;

G = rand(n,n) < p;

G = triu(G,1);

G = G + G';

[x y] = draw_dot(G); % getting error here

gplot(G, [x' y'], '.-');

Wondering if there is any demo on how to use Graphviz? I've downloaded it and have neato but don't know how to use it in MATLAB.

Answer 1

[Brandon Sloane]

Change line 92 of your dot_to_graph.m file as follows:

        [node_pos] = sscanf(line(pos_pos:length(line)), ' pos  = "%f,%f"')';

This will change them to float variables.