Error messagge for controlchart() for p chart
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Hi, does anyone know why it is not working?
controlchart(num_of_def,month_year,'charttype','p','unit',num_of_obs,'nsigma',1)
num_of_def = [0 0 0 0 1; 0 0 0 0 2; 0 0 0 0 0; 0 0 0 0 1]
num_of_obs = [8 8 8 8 8; 6 6 7 6 6; 10 9 9 5 9; 2 1 1 1 1]
month_year = { 'luglio-15'; 'agosto-15'; 'settembre-15'; 'ottobre-15'}
the error message is:
??? Error using ==> controlchart>errorcheck at 971 WIDTH cannot be larger than the number of points.
Error in ==> controlchart at 233 errorcheck(X,ngroups,label,lambda,limits,parent,cctypes,nsigma,...
Thanks
回答（1 个）
Sean de Wolski
2015-7-16
0 个投票
You have four points, and five replicates (columns). You will need at least five points for this.
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