% EXAMPLE 2
% 3D Data
% 3D fuzzy c-means algorithm
%

clear all, close all, clc

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 ) 
           ]';
% 
 sample3 = [ ( 100 - 70 ).*rand( 1, 20 ) + 70, ...
            ( 45 - 30 ).*rand( 1,20 ) + 30, ...
            ( 60 - 40 ).*rand( 1,20 ) + 40
           ]';
% 
inputs = [ sample1, sample2, sample3 ];
% 
[ U, C ] = fuzzy_c_means( inputs, 3, 2, 1e-9 );