how to sort only first column in matlab

X=0.5 1.0;0.1 2;2.5 4 output must be like 0.1 2;0.5 1.0;2.5 4

Answer 1

[Star Strider]

Use the sortrows funciton:

X = [0.5 1.0;0.1 2;2.5 4];
Output = sortrows(X, 1)

Output =
          0.1            2
          0.5            1
          2.5            4