MATLAB编程出现问题,The expression to the left of the equals sign is not a valid target for an a.A=[1.82\x051.04\x050.27\x050.99\x050.79\x050.36\x050.24\x050.13\x050.28\x050.56\x050.75\x050.47\x050.0557.97\x0553.32\x0563.18\x0543.36\x0549.34\x05

来源：学生作业帮助网编辑：六六作业网时间：2024/12/26 09:57:57

MATLAB编程出现问题,Theexpressiontotheleftoftheequalssignisnotavalidtargetforana.A=[1.82\x051.04\x050.27\x0

MATLAB编程出现问题,The expression to the left of the equals sign is not a valid target for an a.A=[1.82\x051.04\x050.27\x050.99\x050.79\x050.36\x050.24\x050.13\x050.28\x050.56\x050.75\x050.47\x050.0557.97\x0553.32\x0563.18\x0543.36\x0549.34\x05
MATLAB编程出现问题,The expression to the left of the equals sign is not a valid target for an a.
A=[1.82\x051.04\x050.27\x050.99\x050.79\x050.36\x050.24\x050.13\x050.28\x050.56\x050.75\x050.47\x050.05
57.97\x0553.32\x0563.18\x0543.36\x0549.34\x0548.98\x0542.31\x0540.81\x0537.92\x0556.49\x0548.5\x0553.69\x0515.96
47.51\x0538.79\x0535.4\x0535.16\x0532.66\x0534.42\x0535.95\x0534.11\x0533.4\x0535\x0535.48\x0532.1\x0531.58
3.78\x051.76\x050.97\x051.63\x051.49\x051.05\x050.94\x050.54\x050.38\x051.38\x051.41\x051.25\x050.08
2.41\x052.37\x051.25\x052.77\x052.7\x052.31\x051.21\x051.26\x052.13\x051.96\x051.89\x051.83\x050.62
85\x0598\x0541\x05118\x05120\x05144\x0521\x0532\x0534\x0535\x0553\x05157\x05106
8958\x056504\x052006\x056435\x057120\x054255\x052144\x051281\x051482\x051615\x052513\x052401\x052303
18.84\x0511.19\x057.03\x054.1\x0510.39\x056.67\x057.32\x055.46\x052.56\x0511.52\x0513.25\x053.67\x051
45234\x0513312\x054213\x0512460\x0518312\x059153\x054346\x053217\x053198\x058450\x055689\x057677\x05996
434085\x05229939\x0526111\x05144142\x05264419\x05102836\x0594792\x0513320\x0513889\x0582717\x0532678\x0544217\x053495
452219\x05171496\x0558629\x05320129\x05229353\x05180078\x0588311\x0538480\x0520000\x0583849\x0575575\x0525868\x0516455
1999.6\x051649.3\x05119.01\x05843.39\x054005.2\x05635.65\x0578.65\x0574.57\x05172.86\x05386.33\x05407.74\x05451.13\x0511.47
39.59\x0550.02\x0512.88\x0536.48\x0559.95\x0523.57\x056.3\x057.64\x056.91\x0526.66\x0532.75\x0514.61\x052.19
]'
A1=A([1 2 4 5],:)
A2=A([6 10 11 12],:)
A3=A([3 7 8 9 13],:)
n1=size(A1,1)
n2=size(A2,1)
n3=size(A3,1)
n=n1+n2+n3
k=3
p=13
f=p*(p+1)*(k-1)/2
d=(2*p^2+3*p-1)*(1/(n1-1)+1/(n2-1)+1/(n3-1)-1/(n-k))/(6*(p+1)*(k-1))
p1=n1/n
p2=n2/n
p3=n3/n
m1=mean(A1)
m2=mean(A2)
m3=mean(A3)
s1=cov(A1)
s2=cov(A2)
s3=cov(A3)
s=((n1-1)*s1+(n2-1)*s2+(n3-1)*s3)/(n-k)
M=(n-k)*log(det(s))-((n1-1)*log(det(s1))+(n2-1)*log(det(s2))+(n3-1)*log(det(s3)))
T=(1-d)*M
C=chi2inv(0.95,f)
if T< chi2inv(0.95,f)
disp('协方差相等')
else
disp('协方差不等')
end
n11=0
n22=0
n33=0
for i=1:n1
w1(i,1)=m1*inv(s)*A1(i,:)'-1/2*m1*inv(s)*m1'+log(p1)
w1(i,2)=m2*inv(s)*A1(i,:)'-1/2*m2*inv(s)*m2'+log(p2)
w1(i,1)=m3*inv(s)*A1(i,:)'-1/2*m3*inv(s)*m3'+log(p3)
for j=1:3
if w1(i,j)==max(w1(i,:))&j~=1
n11=n11+1
end
end
end
for i=1:n2
w2(i,1)=m1*inv(s)*A2(i,:)'-1/2*m1*inv(s)*m1'+log(p1)
w2(i,2)=m2*inv(s)*A2(i,:)'-1/2*m2*inv(s)*m2'+log(p2)
w2(i,3)=m3*inv(s)*A2(i,:)'-1/2*m3*inv(s)*m3'+log(p3)
for j=1:3
if w2(i,j)==max(w2(i,:))&j~=2
n22=n22+1
end
end
end
for i=1:n3
w3(i,1)=m1*inv(s)*A3(i,:)'-1/2*m1*inv(s)*m1'+log(p1)
w3(i,2)=m2*inv(s)*A3(i,:)'-1/2*m2*inv(s)*m2'+log(p2)
w3(i,3)=m3*inv(s)*A3(i,:)'-1/2*m3*inv(s)*m3'+log(p3)
for j=1:3
if w3(i,j)==max(w3(i,:))&j~=3
n33=n33+1
end
end
end
p00=(n11+n22+n33)/(n1+n2+n3) %这个编程是为了使用判别分析实现检验3个总体协方差和交叉误判率.