I don't understand what this u(:,1) does to matrix or vector?

40 次查看（过去 30 天）
DM
DM 2015-4-27
评论： Stephen23 2015-4-28
Hi
What does the following notation mean
u(:,1)
Does it covert a row vector to a column vector?
Thanks

请先登录，再回答此问题。

采纳的回答

pfb
pfb 2015-4-27
编辑：pfb 2015-4-27
It gives you the first column of the array u.
If u is a row vector, that is the 1st element.
if u is a column vector, that is the entire vector.
If you want to transform a row vector into a column, see u', transpose(u), or u(:).
  4 个评论
显示 2更早的评论
DM
DM 2015-4-27
I have also come across the following notation x(:)? Do you know what it means?

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 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