I cannot use graph and digraph functions in matlab 2013b, how to fix it?

I try to use graph and digraph to create a graph in my matlab2013b. When I run the following code, the error shows that "Undefined function 'graph' for input arguments of type 'double'." Would you please tell me what i can do?

Answer 1

[michio]

digraph and graph functions were introduced at R2015b. So a solution is to upgrade your MATLAB version to R2015b or later.

[Miguel Wang]

Thanks a lot! Is there any other solutions? I cannot upgrade my matlab for this moment.

[michio]

Searching in File Exchange is always a valid alternative :) I found some seemingly related functions there. Hope you can find the one you like!

https://jp.mathworks.com/matlabcentral/fileexchange/?utf8=%E2%9C%93&term=graph