清空筛选条件
清空筛选条件

matrix column element limiting

1 次查看（过去 30 天）
mehrdad asadi
mehrdad asadi 2015-7-8
编辑： Stephen23 2015-7-8
hi,
I have a matrix say 200*30. I need to limit the elements of 29th and 30th columns with different constraints. how can I do that?
thanks,

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2015-7-8
Example
A=rand(200,30)
idx=A(:,29)>0.5 & A(:,30)<0.7
out=A(idx,:)
  4 个评论
显示 2更早的评论
mehrdad asadi
mehrdad asadi 2015-7-8
thank you A.Abdelmalek,
I did this, but because I have 4 constraints, and it should be repeated many times in a for loop, it seems it's not that much optimized! thanks anyway, right now, this is the only solution that crosses the mind.
Stephen23
Stephen23 2015-7-8
编辑：Stephen23 2015-7-8
Azzi Abdelmalek's solution is much more optimized than using a loop. This is how MATLAB works best, using basic code vectorization and indexing.

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 Loops and Conditional Statements 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