Index exceeds the number of array elements in Matlab function

This error occurs when you are trying to access an element of an array that does not exist or has not been initialized.

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Index Exceeds the Number of Array Elements
An array is a data structure that stores a collection of elements of the same type, accessible through an index. An index refers to the position of an element in the array. The first element in an array is at index 0, the second element at index 1, and so on. When the index used to access an array exceeds the number of elements in the array, an error occurs. This error is known as "Index Exceeds the Number of Array Elements," and it is one of the most common errors in programming.