Undefined function or variable 'simple_dijkstra'.

Getting the error message "Undefined function or variable 'simple_dijkstra'." when running the following code :

% closeness centrality

function C=closeness(Adjacency)

C=zeros(length(Adjacency),1);  % initialize closeness vector

for i=1:length(Adjacency); 

      C(i)=1/sum( simple_dijkstra(Adjacency,i) ); 

end

Error in closeness (line 8)
    C(i)=1/sum( simple_dijkstra(Adjacency,i) );

Can somebody please help.

Answer 1

[Walter Roberson]

simple_dijkstra is not a Mathworks provided routine and is not part of the File Exchange. It appears to be part of https://github.com/jblocher/matlab-network-utilities

[vignesh raju]

Thanks Walter. The library was helpful in solving the problem.