Why receive Error using sub2ind (line 73) Out of range subscript. Error in sym/subsref?

Question

Mehdi 2022-12-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1878937-why-receive-error-using-sub2ind-line-73-out-of-range-subscript-error-in-sym-subsref

回答： Torsten 2022-12-15

采纳的回答： Torsten

Where is the problem in my codes that I faced error?

M=1;

a=[1,1,1,1]

b=[1];

h=1;

WW=rand(10,10,4,M)

syms eta1 zeta1 eta2 zeta2 eta3 zeta3 eta4 zeta4

ro=1;

F000=zeros(4,M);

F000=sym('F000');

for e=1:4

for r=1:M

F000(e,r)=sym('0');

for i=1:10

for j=10

Cm(1,r)=4/(ro*(a(1))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,1,r)* ...

legendreP(i-1, zeta1)*legendreP(j-1, eta1))^2,zeta1,-1,1),eta1,-1,1)); %Normilization coef for plate 1

Cm(2,r)=4/(ro*(a(2))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,2,r)* ...

legendreP(i-1, zeta2)*legendreP(j-1, eta2))^2,zeta2,-1,1),eta2,-1,1)); %Normilization coef for plate 2

Cm(3,r)=4/(ro*(a(3))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,3,r)* ...

legendreP(i-1, zeta3)*legendreP(j-1, eta3))^2,zeta3,-1,1),eta3,-1,1)); %Normilization coef for plate 3

Cm( 4 , r ) = 4/(ro*(a( 4 ))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,4,r)* ...

legendreP(i-1, zeta4)*legendreP(j-1, eta4))^2,zeta4,-1,1),eta4,-1,1)); %Normilization coef for plate 4

W( i , j , e , r ) = Cm(e,r) * WW(i,j,e,r);

F000( 1 , r ) = W( i, j , 1 , r ) * legendreP( i-1 , zeta1 ) * legendreP( j-1 , eta1 ) + F000( 1 , r );

F000( 2 , r ) = W( i, j , 2 , r ) * legendreP( i-1 , zeta2 ) * legendreP( j-1 , eta2 ) + F000( 2 , r );

F000( 3 , r ) = W( i, j , 3 , r ) * legendreP( i-1 , zeta3 ) * legendreP( j-1 , eta3 ) + F000( 3 , r );

F000( 4 , r ) = W( i, j , 4 , r ) * legendreP( i-1 , zeta4 ) * legendreP( j-1 , eta4 ) + F000( 4 , r );

end

Error using sub2ind (line 73)

Out of range subscript.

Error in sym/subsref (line 992)

R_tilde = sub2ind(size(L), Idx.subs{:});

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Answer 1

Torsten 2022-12-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1878937-why-receive-error-using-sub2ind-line-73-out-of-range-subscript-error-in-sym-subsref#answer_1128752

在 MATLAB Online 中打开

I hope you know what you are doing ...

M=1;
a=[1,1,1,1];
b=[1];
h=1;
WW = rand(10,10,4,M);
W = zeros(10,10,4,M);
W = sym(W);
syms eta1 zeta1 eta2 zeta2 eta3 zeta3 eta4 zeta4
ro=1;
F000=zeros(4,M);
F000=sym(F000);
for e=1:4
    for r=1:M
        for i=1:10
            for j=10
                Cm(1,r)=4/(ro*(a(1))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,1,r)* ...
                    legendreP(i-1, zeta1)*legendreP(j-1, eta1))^2,zeta1,-1,1),eta1,-1,1)); %Normilization coef for plate 1
                Cm(2,r)=4/(ro*(a(2))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,2,r)* ...
                    legendreP(i-1, zeta2)*legendreP(j-1, eta2))^2,zeta2,-1,1),eta2,-1,1)); %Normilization coef for plate 2
                Cm(3,r)=4/(ro*(a(3))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,3,r)* ...
                    legendreP(i-1, zeta3)*legendreP(j-1, eta3))^2,zeta3,-1,1),eta3,-1,1)); %Normilization coef for plate 3
                Cm( 4 , r ) = 4/(ro*(a( 4 ))^2*(b(1))^2*h*vpaintegral(vpaintegral((WW(i,j,4,r)* ...
                    legendreP(i-1, zeta4)*legendreP(j-1, eta4))^2,zeta4,-1,1),eta4,-1,1)); %Normilization coef for plate 4
                W( i , j , e , r ) = Cm(e,r) * WW(i,j,e,r);
                F000( 1 , r ) = W( i, j , 1 , r ) * legendreP( i-1 , zeta1 ) * legendreP( j-1 , eta1 ) + F000( 1 , r );
                F000( 2 , r ) = W( i, j , 2 , r ) * legendreP( i-1 , zeta2 ) * legendreP( j-1 , eta2 ) + F000( 2 , r );
                F000( 3 , r ) = W( i, j , 3 , r ) * legendreP( i-1 , zeta3 ) * legendreP( j-1 , eta3 ) + F000( 3 , r );
                F000( 4 , r ) = W( i, j , 4 , r ) * legendreP( i-1 , zeta4 ) * legendreP( j-1 , eta4 ) + F000( 4 , r );
             end
        end
    end
end