Getting the data points of each cluster in kmeans.

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HIRAKJYOTI BASUMATARY 2017-10-18

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评论： shahab anjum 2020-3-4

After i perform kmeans algorithm of matlab , i get the number of the desired clusters. Now if i want to see the data points of each cluster , how will i proceed. Is there any command in matlab that would help me get that. Any suggestions would be really helpful. Thank You

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KSSV 2017-10-18

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https://ww2.mathworks.cn/matlabcentral/answers/361878-getting-the-data-points-of-each-cluster-in-kmeans#answer_286332

编辑：KSSV 2017-10-18

在 MATLAB Online 中打开

K = 4 ;  % groups 
N = 5000 ;
x = rand(N,1) ; 
y = rand(N,1) ; 
% apply kmeans 
idx = kmeans([x,y],K) ;
% get each cluster
data = cell(K,1) ;
figure
hold on
for i = 1:K
    data{i} = [x(idx==i),y(idx==i)] ;
    plot(x(idx==i),y(idx==i),'.')    
end

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Image Analyst 2019-3-29

Since we can't even visualize 275 dimensions, why do you think you have 6 centroids? What leads you to that conclusion/guess? Do you have any screenshots to explain that?

MA-Winlab 2019-4-1

I am assuming 6 clusters. But I am working on testing with different k number and then compute sillhouette score to see which number to pick.

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shahab anjum 2020-3-2

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did we got the data as matrix form as before..? After the kmeans apply. can u help plz

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shahab anjum 2020-3-4

dear mr MA-Winlab

i have 1000x286 matrix after kmeans i got 1000x286 matrix of clustered data in the form of 1 and 2. i want to get the data back for next work in the shape of 2D matrix 1000x286 same as clustered matrix of kmeans but when i use the above code its gives the data back but not in 2D matrix form but in matrix form with 2 cells. please help me out

shahab anjum 2020-3-4