Programming in MATLAB ® by Ram N. Patel

Author:Ram N. Patel [Ram N. Patel]
Language: eng
Format: epub
Tags: Core Programming
Publisher: Pearson India
Published: 2013-12-31T16:00:00+00:00

7.2 MATLAB Memory Storage

MATLAB stores data in column-major order, that is, the elements of same column are stored in consecutive memory spaces. Consider a matrix A shown here:

>> A = [1 2; 3 4; 5 6];

MATLAB stores the elements of A as shown in Figure 7.1.

Figure 7.1 Illustration of storage format in column-major order. Note that the elements in the same the column are consecutively stored in memory

The A matrix can be accessed in a 1-D manner also. For example, if you want to access the third element from the beginning of the array, type the following at the command prompt:

> A(3) ans = 5

From Figure 7.1, it can be seen that the third element has value 5. This has implications in writing code. Consider Example 7.1.

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