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??? Assignment has more non-singleton rhs dimensions than non-singleton subscripts.
Error in ==> EigenValuesVectors4x4ToTensor at 16
I=[1 0 0 0;0 1 0 0;0 0 1 0;0 0 0 1] T=[T11 T12 T13 T14; T21 T22 T23 T24; T31 T32 T33 T34; T41 T42 T43 T44] A=[A11 A12 A13 A14; A21 A22 A23 A24; A31 A32 A33 A34; A41 A42 A43 A44] L=[L1; L2; L3; L4] f=(zeros(4,4,4)) for r=1:4 for k=1:4 for i=1:4 f(i,k,r)=(T(i,k)-L(r)*I)*A(r,k) end end end
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Your "I" is an array, so L(r)*I is an array, and (T(i,k)-L(r)*I) is too, and so (T(i,k)-L(r)*I)*A(r,k) is going to be an array. You are trying to store that entire array into the single location f(i,k,r)
Perhaps you should be indexing "I" as well.