I am getting the following error while running the code:
Attempted to access R1_rk4(17501); index must be a positive integer or logical.
Here's a part of my code where the problem lies:
ie1 = 1 + 0.000035/h1;
R1_te = R1_rk4(ie1);
e_R1 = abs(R1_te - R3_te);
Btw, R1_rk4 is a vector, not a matrix. h1 is a constant (time step in the problem). I am trying to access a specific element of the vector R1_rk4 whose size is (1 x 80000).
Any help in removing the error would be much appreciated.