I want to perform a function on the values that are on the even positions of my vector

3 次查看（过去 30 天）
Arthur Molina
Arthur Molina 2020-1-12
评论： Arthur Molina 2020-1-12
Hello,
I have a vector that begins at 1 and ends at 89 where the spacing between each number is 4. So, it looks like [1,5,9,13,17,...,89]. What is want to do with this vector is mulitply -1 to only the values in an even position of the vector. What I want essentially is [1,-5,9,-13,....-85,89]. How can I go about doing this? Any advice is appreciated. Thank you.

请先登录，再回答此问题。

采纳的回答

David Hill
David Hill 2020-1-12
M(2:2:end)=-1*M(2:2:end);

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 2-D and 3-D Plots 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