Using For loop to change array values in simulink stateflow

Achembong asked: 2021-09-11 for loop , subscript indices ...

Learn how to efficiently change array values in Simulink Stateflow using for loops. This resource provides practical solutions & examples. Get started now!

Expert Answer

Neeta Dsouza answered . 2025-07-07 19:55:41

it looks like your main problem comes from the function you made. Try incorporating these solutions:

The function you've created, pickBat, doesn't have any output arguments, so it won't return anything. Make sure pickBat outputs something (ie [out1, out2,... ,outn] = pickBat(arg1, arg2,... ,argn)). For this function, you'll want pickBat to output the new values for charge and bat. When you call the function, also make sure to include output arguments.
Currently you're not looping over the index. You're working with only the first index of the input vector, so the vector never properly outputs. You need to incorporate a for loop by introducing the condition i < length(charge) into the function chart, and then you need to check that each index is equal to 100. In matlab code, think of it as an if statement inside of a for loop. You can do this by combining the patterns provided in the pattern wizard. Or you can always write the function in MATLAB code with the MATLAB function in the chart (not to be confused with the Function you're using!).

As a sign of caution, be considerate of the variables here. Stateflow charts don't handle duplicate variables well. This may require some rewording of the commands. Hopefully this steers you in the right direction.

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