wscatter.m

来自「MATLAB编写的一种模式识别里的重要的模糊聚类方法K-means算法的matl」· M 代码 · 共 17 行

function SW = wscatter(x,c);
% WSCATTER(x,c) = within-cluster scatter matrix
% SW = wscatter(x,c)
%	x  - data
%	c  - classification
%	SW - within scatter matrix

% Copyright (c) 1995 Frank Dellaert
% All rights Reserved

[d,n] = size(x);
nc = max(c);

SW = zeros(d);
for i=1:nc
  SW = SW + scatter(cluster(x,c,i));
end