MATLAB Answers

0

I want to know how i can apply k-means clustering on my scatter plotted dataset.

Asked by Reetu Singh on 16 Apr 2019
Latest activity Commented on by David Wilson on 29 Apr 2019
I want to know that how i can apply k means clustering on the above diagram i don't know the code please help me.

  1 Comment

Attach the image properly....

Sign in to comment.

1 Answer

Answer by David Wilson on 16 Apr 2019
 Accepted Answer

You probably want to use kmeans.
Since you didn't give us any data to workj with, nor did you give us any idea of the number of groups, I've deciced to make some up.
Age = randn(40,1)*5+45;
C = 2*Age+100+20*randn(40,1);
plot(Age, C,'s')
This roughly replicates your data. Now I'll divide it up into 3 groups, and plot them with different colours.
idx = kmeans([Age,C],3); % select 3 groups
cmap = parula(3);
clf; hold on
for i=1:3
k = find(idx==i);
plot(Age(k), C(k), 's', 'MarkerFaceColor',cmap(i,:));
end
hold off
Feel free to play with the # of expected groups.
tmp.png

  6 Comments

@David Wilson Sir i want to calcuate the accuracy of the above diagram is it possible or not.
Not easily to my knowledge. It will be application dependent.

Sign in to comment.