netgraph_draw_connections.m

％The Metabolic Networks Toolbox contains functions to create, ％modify, display, and simulate bioche

function netgraph_draw_connections(network,M)

% function netgraph_draw_connections(network,M)
%
% visualise quantitative relations among reactions
% M is supposed to be a symmetric matrix

n_react = length(network.graphics_par.actnames);
x=network.graphics_par.x(:,end-n_react+1:end);
for i1 = 1: n_react,
for i2 = 1: i1-1,
    % red for negative, green for positive values
    c = [1 0 0]*(M(i1,i2)<0) + [0 1 0]*(M(i1,i2)>0);
if M(i1,i2)~=0,
    h=line( [x(1,i1) x(1,i2)],[x(2,i1) x(2,i2)]);
set(h,'Color',c);
end
end
end