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

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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
end
end
end
Error using sub2ind (line 73)
Out of range subscript.
Error in sym/subsref (line 992)
R_tilde = sub2ind(size(L), Idx.subs{:});

Accepted Answer

Torsten
Torsten on 15 Dec 2022
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

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