How can I extract the first element of a vector in simulink?

162 次查看（过去 30 天）
Ziad Almalak
Ziad Almalak 2018-7-18
编辑： Michael Hodgson 2021-10-7
I have a [1500x1] vector in simulink. I wish to extract the first element from this vector. I have attempted to use a MATLAB function block to perform this task, but it yields me nothing.

请先登录，再回答此问题。

回答（1 个）

Honglei Chen
Honglei Chen 2018-7-18
编辑：Honglei Chen 2018-7-18
You should be able to use a Selector block. You can find the reference page at
https://www.mathworks.com/help/simulink/slref/selector.html
HTH
  3 个评论
显示 1更早的评论
Honglei Chen
Honglei Chen 2018-7-18
Looks like although your output is 1500x1, it is configured as a variable size signal. I would set it as
  • Number of input dimensions: 2
  • Index mode: one-based
  • 1 -> Index Option: Index vector (dialog) -> Index: 1
  • 2 -> Index Option: Index vector (dialog) -> Index: 1
HTH
Michael Hodgson
Michael Hodgson 2021-10-7
编辑：Michael Hodgson 2021-10-7
Can I use a Selector block to get the last element of an array? As in, "A[end]"?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Signal Attributes and 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