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Error'incorrect dimensions for matrix multiplication'

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Ancy S G
Ancy S G 2022-3-1
评论： VBBV 2022-3-30
Ran in:
phis=3;phib=8;
zeta=-.95:0.5:10;
Eg=[-2.9583 5.2519 -6.5456 5.2455 -0.4883 -7.0614 -6.5562];
xi=[1 1 1 1 1 1];
for n=1:1:6
if Eg(:,n)>=zeta
zeta=xi/phis-1;
F=xi*log(1+zeta)+phis*(Eg(n,:)-zeta);
elseif Eg(:,n)<zeta
zeta=xi/phib-1;
F=xi*log(1+zeta)+phib*(Eg(n,:)-zeta);
else
end
end
Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
plot(zeta,F,'*')
How to correct the dimension of this matrix

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回答（1 个）

VBBV
VBBV 2022-3-1
编辑：VBBV 2022-3-1
Ran in:
phis=3;
phib=8;
zeta=-.95:0.5:10;
Eg=[-2.9583 5.2519 -6.5456 5.2455 -0.4883 -7.0614 -6.5562]
Eg = 1×7
-2.9583 5.2519 -6.5456 5.2455 -0.4883 -7.0614 -6.5562
xi=[1 1 1 1 1 1];
for n=1:1:6
if Eg(:,n)>=zeta
zeta=xi/phis-1;
F(:,n)=xi.*log(1+zeta)+phis*(Eg(:,n)-zeta); % accessing incorrect index
elseif Eg(:,n)<zeta
zeta=xi/phib-1;
F(:,n)=xi.*log(1+zeta)+phib*(Eg(:,n)-zeta);
else
end
end
plot(zeta,F,'*')
check the sizeof Eg matrix

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