Conditional mean for a matrix (calculate the mean ignoring the negative numbers)

13 次查看（过去 30 天）
Daniel Maniov
Daniel Maniov 2019-12-19
回答： Allen 2019-12-19
I have a matrix m x n with positive (including zeros) and some negative numbers.
How can I calculate the mean of all the numbers ignoring the negatives?
For example, my matrix is:
-1 2 4
3 -1 5
-1 3 4
This "conditional mean" should calculate (2+4+3+5+3+4)/6 = 3.5
Thanks.

请先登录，再回答此问题。

采纳的回答

Allen
Allen 2019-12-19
Use something similar to the below example
A = [-1, 2, 4
3,-1, 5
-1, 3, 4];
mean(A(A>=0))

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