Dimension Disagree issue ?

Hi,

I have the code below :

% 2D Data
sample1 = [ ( 75.2 - 32 ).*rand( 1, 20 ) + 32, ...
    ( 60 - 20 ).*rand( 1,20 ) + 20, ...
    ( 15 -( -3.4 ) ).*rand( 1, 20 ) + ( -3.4 ) 
    ]';
sample2 = [ ( 19.2 - 1 ).*rand( 1,20 ) + 1, ...
    ( -10 - ( -42.5 ) ).*rand( 1,20 ) + ( -42.5 ), ...
    ( 20.4 - ( -5 ) ).*rand( 1,20 ) + ( -5 ) 
    ]';
inputs = [ sample1, sample2 ];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
nClusters=3;
fuzzification=2;
[nInputs, nInputSamples ] = size( inputs );
% Number of Clusters
nC = nClusters;
% fuzzification parameter
m = fuzzification; 
% Generate the random association of inputs to the clusters, values [ 0, 1 ]
n = rand( nInputs, nC );
nTotal = sum( n, 2 );
    RandomAssociationValues = ( n./nTotal );
    
    

when i run it , i recieved an error which is :

kindly , how can i fix this issue???

    Error using  ./ 
     Matrix dimensions must agree.
    
    
    
    
    

Answer 1

[Chunru]

Your code can run without issue as show below.

Try "clear all;" before running the code. Or you can step through your code to see where the code goes wrong.

% 2D Data
sample1 = [ ( 75.2 - 32 ).*rand( 1, 20 ) + 32, ...
    ( 60 - 20 ).*rand( 1,20 ) + 20, ...
    ( 15 -( -3.4 ) ).*rand( 1, 20 ) + ( -3.4 ) 
    ]';
sample2 = [ ( 19.2 - 1 ).*rand( 1,20 ) + 1, ...
    ( -10 - ( -42.5 ) ).*rand( 1,20 ) + ( -42.5 ), ...
    ( 20.4 - ( -5 ) ).*rand( 1,20 ) + ( -5 ) 
    ]';
inputs = [ sample1, sample2 ];
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
nClusters=3;
fuzzification=2;
[nInputs, nInputSamples ] = size( inputs );
% Number of Clusters
nC = nClusters;
% fuzzification parameter
m = fuzzification; 
% Generate the random association of inputs to the clusters, values [ 0, 1 ]
n = rand( nInputs, nC );
nTotal = sum( n, 2 )

nTotal = 60×1

1.5271 1.6793 1.5102 1.7007 1.6301 1.6533 1.1795 1.5919 2.6963 1.5790

RandomAssociationValues = ( n./nTotal );

[shawin]

No, the error is with :

RandomAssociationValues = ( n./nTotal );???

Error using ./

Matrix dimensions must agree.

Matlab version is : 2016a

[shawin]

The code is working with Matlab 2022