join.m

数据挖掘算法中空间同位规则挖掘的matlab源码

sample = [[1:length(sample)]' sample];

sample_size_2 = zeros(length(sample)^2,9);
index = 1; 
for i=1:length(sample) 
    for j=1:length(sample)
       sample_size_2(index, 1:4) = sample(i,1:4); 
       sample_size_2(index, 5:8) = sample(j,1:4); 
       sample_size_2(index, 9) = sqrt((sample(i,3) - sample(j,3))^2 + (sample(i,4) - sample(j,4))^2); 
       index = index + 1;
    end
end;