Hello, I'm relatively new to MATLAB and having difficulty taking a value generated by a for loop and saving that to one spot in an array. What I want to do is save the result of the variable after each iteration of the for loop to a different point in the array. The code is designed to calculate the mass of a rocket as it burns fuel, and the BurnTime and resolution variables are there so the loop gives outputs from 0 to 2 seconds at 0.1 second intervals. I have been able to get each individual value of CurrentMass to display in the command window (also included in the code here) but whenever I try to save them to the array it says "array indices must be positive integers or logical statements".
for t = 0:resolution:BurnTime
BurnRate = (-(MFuel)/BurnTime);
CurrentMass = (MRocket + MFuel) + (BurnRate * t);
Drag = 0.6 * (CurrentVelocity)^2;
Acceleration = ((Thrust - CurrentMass) + (Gravity + Drag))/CurrentMass;
CurrentVelocity = PreviousVelocity + t * Acceleration;
CurrentHeight = CurrentVelocity * t;
massArray(t) = CurrentMass;
fprintf("\n \tFor t = %.2f \n", t);
fprintf("\tCurrent Mass : %.2f \n", CurrentMass);
Thanks in advance for any help.
