how can i delete rows from an array ?

Question

ME 2015-3-17

0
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https://ww2.mathworks.cn/matlabcentral/answers/183583-how-can-i-delete-rows-from-an-array

评论： Stephen23 2015-3-18

I have an array called pair with dimension 90x2 this contains numbers 1 to 10 in each pair.

    e.g        3           7
               3           8
               3           9
               3          10
               4           1
               4           2
               4           3
               4           5
and so on ...

I want to be able to delete certain rows from the array e.g delete row (20) and row (50)

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Answer 1

Stephen23 2015-3-17

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编辑：Stephen23 2015-3-17

在 MATLAB Online 中打开

To delete rows 20 and 50 you can use some basic MATLAB matrix indexing :

A = [your matrix];
A([20,50],:) = [];

Here is a simple example showing how it works:

>> B = [1,6;2,7;3,8;4,9;5,10]
B =
     1     6
     2     7
     3     8
     4     9
     5    10
>> B([2,4],:) = [] % remove rows two and four
B =
     1     6
     3     8
     5    10