kmeans Too many input arguments.

Hello,

I know it asked multiple times but,alas I could not find solution so I decided to ask this. Iam looking the cluste only singe column data size(1,1)

[idx,C] = kmeans(data(:,3),2)

Error using kmeans

Too many input arguments.

1. I get all the kmeans which kmeans -all and found 4. I believe C:\Program Files\MATLAB\R2018b\toolbox\stats\stats\kmeans.m is the correct one thats produce proper result but I could not figure out how can I make it work
2. I go to home->set path (in environment section) and move it all the way top. But Iam getting still same error
3. I found something str = who(which('kmeans')) bout only store the first one. Even if I store the shadowed one I do not know how can I make it work
4. How can I remove the shadowed, as I understand if one function ishadowed it is not working

Is there a way to make work the 'wanted' kmeans, in this case it is the 3rd in the lists hadowed one.

I really appreciate the all answers

Many thanks in advance

which kmeans -all

Not on MATLAB path % kmeans constructor

C:\Program Files\MATLAB\R2018b\toolbox\stats\bigdata\@tall\kmeans.m % tall method

C:\Program Files\MATLAB\R2018b\toolbox\stats\gpu\@gpuArray\kmeans.m % gpuArray method

C:\Program Files\MATLAB\R2018b\toolbox\stats\stats\kmeans.m % Shadowed

C:\Users\zgrey\Desktop\mtex-5.1.1\tools\statistic_tools\kmeans.m % Shadowed kmeans constructor

Answer 1

[Adam Danz]

Option 1

The best solution is to rename all of your custom kmeans() functions with unique names. Custom functions should generally have specific, unique names to avoid this problem.

Option 2

If option 1 isn't possible, try removing the conflicting functions from your path. You can see the path to the conflicting functions by using which functionName -all and then you can use rmpath() to remove the paths.

Option 3

A band-aid solution for built-in functions is to use the builtin() function which will execute the built-in function even if it is shadowed. Unfortunately kmeans() comes from a toolbox and is not built-in.

Option 4

For non built-in function that are shadowed, if you can't do options 1 or 2, you'll need to change the current directory to the directory that stores the shadowed function. Changing the cd isn't an optimal solution which is why this option is last. cd('path')

[Zelda Grey]

Thanks for your answer,some quick, dummy questions

1. How can I rename the matlab function like kmeans,
2. I try builtin solution but get some error, am I write it wrong

[idx,C] = builtin('kmeans', data(:,3),2)% 2 is cluster number

Cannot find builtin function 'kmeans'

[Adam Danz]

1) How can I rename the matlab function like kmeans,

You should not rename built-in matlab function. You should rename the custom functions by changing the filename and the function's name within the file.

2) woops! I overlooked the fact that kmeans() is a toolbox function and not a built-in matlab function. Built-in functions will indicate "built-in" when calling which().

Example: which sin -all

I updated my answer to fix that mistake. I also added option #2 & #4.

[Zelda Grey]

Hello, thanks for your explanations, would you please bear with me, Iam really tryin your solutions but could work it yet

I tried option 1 and give me warning that I am not allowed to change kmeans name.

Option2#

I tried it and removed all unnecessary kmeans form the list, and left the most eligible one which is under statictic toolbox, but I get the error

• Error 1: [idx,C] = kmeans(data(:,3),2)

The constructor for class 'kmeans' must return only one output value.

• Error 2: C= kmeans(data(:,3),2)

Error using kmeans

Too many input arguments.

Here how I reve the other kmeans fromt he list

rmpath('C:\Program Files\MATLAB\R2018b\toolbox\stats\bigdata\@tall\')

rmpath('C:\Program Files\MATLAB\R2018b\toolbox\stats\bigdata')

rmpath('C:\Program Files\MATLAB\R2018b\toolbox\stats\gpu\')

I checked the what is left here is the list

which kmeans -all

Not on MATLAB path % kmeans constructor

C:\Program Files\MATLAB\R2018b\toolbox\stats\stats\kmeans.m % Shadowed

Option4#

I change the directory with

cd('C:\Program Files\MATLAB\R2018b\toolbox\stats\stats')

I still get the Too many input arguments error

Ireally appreciate your answers

[Adam Danz]

Option 1) "I tried option 1 and give me warning that I am not allowed to change kmeans name."

That option suggests changing the name of your custom function, not the matlab functions. In fact, in a comment above I reiterated that you can/should not change the name of matlab functions.

Option 2 & 4) "The constructor for class 'kmeans' must ...."

I don't know what's going on here. Does the problem persist when you add the correct path using addpath()? Does the problem persist after restarting matlab?

[Zelda Grey]

Hi, I tried option 1, and rename the mtex kmens function with something else (kmens_mtex) and the stats kmens stop being shadowed. Thank you so mcuh for your answers