matrix

1 次查看（过去 30 天）
Mate 2u
Mate 2u 2012-6-14
Hi I have a 1 x 100 row matrix. I want to calculate in one line what percentage (interms of decimal) are the elements which are the number 1 (matrix is full of 1's, -1's and 0s'.)
Then I would like another one line to give the percentage of -1's.

请先登录，再回答此问题。

采纳的回答

Wayne King
Wayne King 2012-6-14
x = randi([-1 1],1,100);
percent1 = 100*(length(x(x==1))/numel(x));
percentminus1 = 100*(length(x(x == -1))/numel(x));
Another way
sum(bsxfun(@eq,x,1))
sum(bsxfun(@eq,x,-1))

更多回答（1 个）

Walter Roberson
Walter Roberson 2012-6-14
mean(YourArray == 1)

类别

在 Help Center 和 File Exchange 中查找有关 Logical 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