what does this error mean?how to correct this error?

[José-Luis]

Seriously?

[Adam]

Surely the error is self-explanatory?! How are you expecting someone to make it more obvious than that?

[Walter Roberson]

That does not appear to be an error from Mathworks-provided code: it appears to be an error from user code, from the third party Quadcopter Dynamic Modeling and Simulation (Quad-Sim)

Answer 1

[Alexander Holman]

You have two different vectors 'measured grams' and 'Throttle values' when doing matrix/vector operations you are required the lengths of these to match (even if it's with some 0 values). Make sure your input in both cases has the same number of arguments.