Sorting the Data in Each Column :: Data Structures (Programming)

Programming

Sorting the Data in Each Column

The sort function sorts matrix elements along a specified dimension. The syntax for the function is

```
sort(matrix, dimension)
```

To sort the columns of a matrix, specify 1 as the dimension argument. To sort along rows, specify dimension as 2.

This example first constructs a 3-by-5 matrix:

A = rand(3,5) * 10
A =
    9.5013    7.6210    6.1543    4.0571    0.5789
    2.3114    4.5647    7.9194    9.3547    3.5287
    6.0684    0.1850    9.2181    9.1690    8.1317

Sort each column of A in ascending order:

c = sort(A, 1)
c =
    2.3114    0.1850    6.1543    4.0571    0.5789
    6.0684    4.5647    7.9194    9.1690    3.5287
    9.5013    7.6210    9.2181    9.3547    8.1317

issorted(c(:, 1))
ans =
     1

Shifting the Location of Matrix Elements Sorting the Data in Each Row