Are you referring to the ‘Talagrand diagram’? If so, I just searched the TMW website for it and came up empty for code and examples. You'll likely have to write your own code but it should be easy to use MATLAB's histogram and bar functions with your results.
What paper was that graph taken from? The authors may have used MATLAB and if so might be willing to share their code with you. Did they already publish it as part of their SOM?