Matlab defines a specific operation method for an array of unknown size

In Matlab, how to define an array of unknown size? This problem bothers many users. In order to solve this problem, PHP editor Xiaoxin specially brings this article, which details the specific steps of defining an array of unknown size and guides you to easily solve this problem.

In the first step, we first need to know that matlab does not need to define the size in advance. You can dynamically increase it by yourself. Enter a=[], as shown in the figure below:

The second step We don’t know the size of array a. We can assign a value to the first row of the array, a(1,:)=[1 3 5], as shown in the following figure:

Third Enter a(2,:)=[2 4 6] in the first step to assign a value to the second row of the array, as shown in the figure below:

Input a(4,:)= in the fourth step [1 5 7], perform cross-row assignment, you can see that matlab automatically assigns the third row to the array, all are 0, and increases dynamically, as shown in the following figure:

Fifth Enter a(5,3)=8 for assignment. You can see that row 1 and column 2 of row 5 are automatically added, as shown in the figure below:

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