www.gusucode.com > stats 源码程序 matlab案例代码 > stats/UseWesternElectricControlRuleExample.m
%% Use Western Electric Control Rule %% % Load the sample data. % Copyright 2015 The MathWorks, Inc. load parts; %% % Create an Xbar chart using the |we2| rule to mark out of control % measurements. st = controlchart(runout,'rules','we2'); x = st.mean; cl = st.mu; se = st.sigma./sqrt(st.n); hold on plot(cl+2*se,'m') %% % You can see the out of control points marked with a red circle. %% % Use |controlrules| to identify the measurements that violate the control % rule. R = controlrules('we2',x,cl,se); I = find(R)