How to delete data from 2D matrix?

a = 155    34,  
    127   134,
    223   334,
    135   366,
    123   418,

Lets say I want to delete the second row data so a become like this.

a = 155    34,
    223   334,
    135   366,
    123   418,

Answer 1

[Image Analyst]

a(2,:) = [];

[Grace]

Hi, extended from this question, what if i want to delete several rows from a matrix? How am i going to do this?

[John D'Errico]

TRY SOMETHING! Logically, what would this do:

a([2 3],:) = [];

??

The trick to MATLAB is to try out what seems logical. Very often it will do what you might expect. Read the help where possible, but you will learn much by playing around.