What is the toolbox for kmeans?

What is the toolbox to obtain kmeans as a function? I have these toolboxes: 'Deep learning toolbox, Statistics and machine learning toolbox, Image processing toolbox', but Matlab doesn't find kmeans as a function. Why??

Answer 1

[Steven Lord]

The kmeans function is in Statistics and Machine Learning Toolbox (previously the Statistics Toolbox) and has been since at least release R2006a. Do you have this toolbox both installed and licensed? [If you're in an environment where you share licenses with others in your institution, all the licenses may be in use when you try to use kmeans.]

Can you clarify what you mean by "Matlab[sic] doesn't find kmeans as a function"? Does it throw an error (and if so what is the full and exact text of that error -- show us all the text displayed in red?) Does it issue a warning? Does it do something else?

[Enrica Brunetti]

If I write 'help kmeans' in the command window:

>> help kmeans
No help found for kmeans.m

Or if I do run with a script that uses kmeans: in the command window appear this in red:

Attempt to execute SCRIPT kmeans as a function:

C:\Users\Enr\Documents\MATLAB\kmeans.m

Error in ex (line 27)

[idx,C] = kmeans(X,K);

[Steven Lord]

You've written your own kmeans.m file that's shadowing the function included in Statistics and Machine Learning Toolbox. Rename or delete your kmeans.m and you should be able to use the one from the toolbox.