Error'incorrect dimensions for matrix multiplication'

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

Answer 1

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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

[Ancy S G]

Thank you

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