I got message error when add evalclusters function to my ver.

Hi all, i add evalclusters functions to matlab ver. 2012a but when I ran it, I got this error message:

Undefined variable "clustering" or class "clustering.evaluation.SilhouetteEvaluation".

Error in evalclusters (line 174) obj = clustering.evaluation.SilhouetteEvaluation(X,YorFun,varargin{:});

Answer 1

[Walter Roberson]

evalclusters was introduced in R2013b. If you copied an R2013b or later evalclusters to your R2012a MATLAB then you are missing the supporting code needed to make evalclusters work.

Note: it would be a copyright violation to copy a newer toolbox function to an older MATLAB without permission from Mathworks.