Coding to plot the Elbow Curve for the Elbow method

I had tested my dataset using the existing coding from https://www.mathworks.com/matlabcentral/fileexchange/65823-kmeans_opt, and it works. But, in the coding there is no code to plot the Elbow method. May I know if there is another source code that i can utilized, where the code can provide a code to plot the Elbow Curve

Answer 1

[Himanshu]

Hello,

I understand that you want to plot the elbow curve for k-means clustering in MATLAB.

You can follow the below code to plot the curve:

% Plot the elbow curve
figure;
% k_max is maximum number of clusters to test
% sse is the sum of squared distances
plot(1:k_max, sse, '-o');
xlabel('Number of clusters');
ylabel('Sum of squared distances');
title('Elbow Curve');

You can refer to the below documentation to understand more about the k-means clustering and "plot" function.

k-means clustering (mathworks.com)

2-D line plot (mathworks.com)