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[ÇóÖú] MatlabÖ÷³É·Ö·ÖÎö³ÌÐòÔõô½âÊÍ

MatlabÈí¼þÓÐûÓлáµÄ£¬Çó°ïÖú£¬Ö÷³É·Ö·ÖÎö
ÎÒд³öÁ˳ÌÐò£¬µ«ÊDz»ÖªµÀÔõô½âÊÍ£¬ÓÐûÓдóÉñ°ïÎÒ¿´¿´ÔËÐнá¹ûʲôÒâ˼£¡ x=[30,33.9,37,41.7,45;40.9,41.3,44,45.1,49;31,37.5,41.8,40.8,37.3;28.5,31,36.5,40.2,48;22,37.5,46,55.5,59.7];
stdr=std(x)
[n,m]=size(x);
sddata=x./stdr(ones(n,1),
[p,princ,egenvalue]=princomp(sddata);
p=p(:,1:5)   
sc=princ(:,1:5)  
egenvalue
per=100*egenvalue/sum(egenvalue)

stdr =

    6.7990    3.9278    4.2093    6.3493    8.0805


sddata =

    4.4124    8.6307    8.7901    6.5677    5.5689
    6.0156   10.5147   10.4531    7.1032    6.0640
    4.5595    9.5472    9.9305    6.4260    4.6160
    4.1918    7.8924    8.6713    6.3315    5.9402
    3.2357    9.5472   10.9282    8.7412    7.3881


p =

   -0.1525    0.6704    0.6029    0.0849    0.3957
    0.3632    0.5891   -0.1478   -0.4633   -0.5336
    0.5392    0.2622   -0.3438    0.7100    0.1352
    0.5767   -0.1756   -0.0010   -0.4931    0.6272
    0.4706   -0.3225    0.7046    0.1759   -0.3836


sc =

   -1.1576   -0.4575

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