help with kmeans clustering

hello I'm working on k-means clustering algorithms I'm using the default function of matlab

when i read the documentation i found that the distance hamming used only with binary dataset

so i tried this :

B=randi([2:3],[150,7])>2;
>> idx=kmeans(B,4,'Distance','hamming');

it's so clear that B is binary but when i click on run button i obtain this error

Undefined function 'kmeans2' for input arguments of type 'struct'.

Error in kmeans (line 322)
    [varargout{1:nargout}] = kmeans2(X,k, distance, emptyact,reps,start,...

any ideas about where the problem is .?

[Star Strider]

Actually, ‘B’ is logical.

Your code runs for me (in R2019a) without error, producing a (150x1) double array in ‘idx’.

What is the result when you run:

whos('B')

When I run it, I get:

  Name        Size            Bytes  Class      Attributes
  B         150x7              1050  logical  

If you get a different result, that could help define the problem.

[Abdelmalek Benaimeur]

B=randi([2:3],[150,7])>2;
>> whos('B')
  Name        Size            Bytes  Class      Attributes

  B         150x7              1050  logical           

[Star Strider]

O.K. My hypothesis was that you had already defined ‘B’ as a structure, and that was causing the problem.

I copied your code, pasted it to a script, and ran it without problems. I’m now out of ideas.

[KSSV]

Which version you are using? It is running fine in 2017b. Can you tell what

which kmeans

outputs?

[Abdelmalek Benaimeur]

I'm using MATLAB R2018b

>> which kmeans
C:\Program Files\MATLAB\R2018b\toolbox\stats\stats\kmeans.m

[Walter Roberson]

Please show the output of

which -all kmeans2

[Abdelmalek Benaimeur]

which -all kmeans2 
C:\Program Files\MATLAB\R2018b\toolbox\stats\stats\private\kmeans2.m  % Private to stats

[Walter Roberson]

Wait... the run button? What you posted for was run at the command window, not with the run button. If you are using the run button, then your B might be something different.

Put in a breakpoint at line 322 of kmeans (the call to kmeans2) and examine the variables to figure out which of them is a structure. On my system, RNGscheme shows up as a structure but none of the other variables.

[Abdelmalek Benaimeur]

I'm using a script that's why i said run button (green triangle button) I send the same script to some friends it works 100% on their MATLAB but mine doesn't want to run it

[Walter Roberson]

dbstop if error, run, and examine the parameters being passed to the call.

[Abdelmalek Benaimeur]

@Walter Roberson

@Star Strider

I found the solution of this problem

all what i did is that i pasted the function kmeans2 to the path where I'm working

and the problem is fixed