problem with matrix selection

2012 11 12
1 个回答
回答已采纳
12 次查看（30 天）

0 个投票

Hi i want to clear some data from a matrix a of size 10*20. i have the index of data to clear. for a vector b we do it lik this: b(index)=[]
how to do it for matrix?

请先登录，再回答此问题。

 采纳的回答

Thomas
Thomas 2012-11-12
编辑：Thomas 2012-11-12

1 个投票

You will have to clear a row or a column completely
to remove row
a=[1 2 3;4 5 6; 7 8 9]
a(2,:)=[] % remove 2nd row
to remove column
a=[1 2 3;4 5 6; 7 8 9]
a(:,2)=[] % remove 2nd column
otherwise you need to convert them to NaN if removing individually
a=[1 2 3;4 5 6; 7 8 9]
a(2,2)=NaN % convert 2nd row 2nd col to NaN

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by