create two matrices from a larger matrix

2013 3 28
2 个回答
回答已采纳
4 次查看（30 天）

0 个投票

hi,
so I have this matrix harmonics [40x99226] and I want to create two matrices from the original, called harmA and harmB. harmA will have the rows 1,3,5...39 while harmB will get the rest 2,4,6...40. The new matrices will still carry all the 99226 samples that belong to each row. This is what I have so far, but it's not doing the trick.
Thank you for taking the time, I appreciate it!

请先登录，再回答此问题。

 采纳的回答

Wayne King
Wayne King 2013-3-28
编辑：Wayne King 2013-3-28

0 个投票

Just do:
X = randn(40,99226);
harmA = X(1:2:end,:);
harmB = X(2:2:end,:);
MATLAB is generally really good at handling these types of matrix-vector operations without loops.

更多回答（1 个）

tony karamp
tony karamp 2013-3-28

0 个投票

omg... you are right!
I had tried
harmA = X(1:2:end);
harmB = X(2:2:end);
but didn't work.
I didn't think to add the other dimension.
Thanks a bunch

类别

在 帮助中心 和 File Exchange 中查找有关 Numerical Integration and Differential Equations 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