Index exceeds number of array elements (1)

Paxton asked: 2020-12-08 matlab , array index , matrix

Fix Index exceeds number of array elements MATLAB errors! Our resource provides solutions, examples, and debugging tips to resolve this common MATLAB problem.

Expert Answer

Prashant Kumar answered . 2025-07-11 20:45:44

It would appear your function has a little problem.

You start with the following:

function fun=nonstqsol(x)
global n M_biomass  T M_gas M_char n_char
R=8.314;
a=0.2;
b=0.13;
x=1.44;M

This means that, no matter what your input for x is, it immediately gets replaced by x=1.44. A little later in your function, you try to define nCO:

nCO =x(2);       %Mole of carbon monoxide

However, this results in an error because x only contains a single value. Hence, your index (2) exceeds the number of elements (1) in x.

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