cluster plotting in matlab

I attached data file of n*4 size. I used

[idx,C] = kmeans(X,3)

for clustering and obtain idx as cluster index and C as centroid, but I want to plot which shows these three clusters. how to do it.

Answer 1

[the cyclist]

The documentation for kmeans gives several examples of plotting the output (including the code to do so).

[Jay Hanuman]

in Documentation cluster plotting given only for 2 variable, but I have 4 variable data so I don't know how to do it for 4 variable

[the cyclist]

It is of course not possible to plot four spatial dimensions. The main alternatives would all involve plotting some projection of your data onto a smaller number of dimensions. Possibilities are

• Use plot3 or scatter3 to plot 3 out of 4 dimensions, each in turn
• Just use plot as in the example, and plot each pair in turn