2. After creating the array, you can index the array or matrix. When indexing an array or matrix, you can accurately index the elements of rows and columns. For example, we can enter the code in the MATLAB command window.
3. You can also use a linear index to index the elements in the second row and the third column above, that is, enter a single-valued index, that is, traverse each column in turn according to a single subscript. If the array or matrix is very large, we can calculate the size of the array or matrix first, and then use the size to help us calculate.
4. When indexing an array or matrix, be careful not to index more than the size of the matrix or array, otherwise the program will report an error. You can use size or length to calculate the size of an array or matrix first.
5. Finally, what format can you use to create an equidistant array or matrix? Start: Step: End the creation, enter the code in the command window, as shown in the following figure, and the creation is complete.