how to compare the elements of a matrix and fill another matrix with the elements of a vector

2 次查看（过去 30 天）
Diego Játiva
Diego Játiva 2020-7-19
评论： Diego Játiva 2020-7-20
what I am trying to do is fill a matrix of zeros with the elements of a vector, but first I have to compare with a matrix of 1 and 0 to know what value should go
these vectors represent the availability and unavailability of a group of components of an electrical system, if the element of the matrix is equal to 1 it takes the value of availability, if it is zero it must take the value of unavailability
the code that I propose only fills the first column of the matrix of zeros with the corresponding elements of a and b, but I cannot get the other columns to be filled with the corresponding elements
n=5;
a=[0.9 0.8 0.7 0.6 0.5];
b=[ 0.1 0.2 0.3 0.4 0.5];
t=ff2n(n);
t1=zeros(size(t));
for i = 1:length(t)
if t(i)==1
t1(i) =a(1,1);
else
t1(i) = b(1,1);
end
end
disp(t1)

请先登录，再回答此问题。

采纳的回答

julian navas
julian navas 2020-7-19
Since your t matrix is full of 0 and 1 you can take advantage of that and just do this
a = [0.9 0.8 0.7 0.6 0.5];
b = [0.1 0.2 0.3 0.4 0.5];
t = ff2n(n);
t1 = t.*a
t1 =
0 0 0 0 0
0 0 0 0 0.5000
0 0 0 0.6000 0
0 0 0 0.6000 0.5000
0 0 0.7000 0 0
0 0 0.7000 0 0.5000
0 0 0.7000 0.6000 0
0 0 0.7000 0.6000 0.5000
0 0.8000 0 0 0
0 0.8000 0 0 0.5000
0 0.8000 0 0.6000 0
0 0.8000 0 0.6000 0.5000
0 0.8000 0.7000 0 0
0 0.8000 0.7000 0 0.5000
0 0.8000 0.7000 0.6000 0
0 0.8000 0.7000 0.6000 0.5000
0.9000 0 0 0 0
0.9000 0 0 0 0.5000
0.9000 0 0 0.6000 0
0.9000 0 0 0.6000 0.5000
0.9000 0 0.7000 0 0
0.9000 0 0.7000 0 0.5000
0.9000 0 0.7000 0.6000 0
0.9000 0 0.7000 0.6000 0.5000
0.9000 0.8000 0 0 0
0.9000 0.8000 0 0 0.5000
0.9000 0.8000 0 0.6000 0
0.9000 0.8000 0 0.6000 0.5000
0.9000 0.8000 0.7000 0 0
0.9000 0.8000 0.7000 0 0.5000
0.9000 0.8000 0.7000 0.6000 0
0.9000 0.8000 0.7000 0.6000 0.5000
t2 = not(t.*a).*b
t2 =
0.1000 0.2000 0.3000 0.4000 0.5000
0.1000 0.2000 0.3000 0.4000 0
0.1000 0.2000 0.3000 0 0.5000
0.1000 0.2000 0.3000 0 0
0.1000 0.2000 0 0.4000 0.5000
0.1000 0.2000 0 0.4000 0
0.1000 0.2000 0 0 0.5000
0.1000 0.2000 0 0 0
0.1000 0 0.3000 0.4000 0.5000
0.1000 0 0.3000 0.4000 0
0.1000 0 0.3000 0 0.5000
0.1000 0 0.3000 0 0
0.1000 0 0 0.4000 0.5000
0.1000 0 0 0.4000 0
0.1000 0 0 0 0.5000
0.1000 0 0 0 0
0 0.2000 0.3000 0.4000 0.5000
0 0.2000 0.3000 0.4000 0
0 0.2000 0.3000 0 0.5000
0 0.2000 0.3000 0 0
0 0.2000 0 0.4000 0.5000
0 0.2000 0 0.4000 0
0 0.2000 0 0 0.5000
0 0.2000 0 0 0
0 0 0.3000 0.4000 0.5000
0 0 0.3000 0.4000 0
0 0 0.3000 0 0.5000
0 0 0.3000 0 0
0 0 0 0.4000 0.5000
0 0 0 0.4000 0
0 0 0 0 0.5000
0 0 0 0 0
t1+t2
ans =
0.1000 0.2000 0.3000 0.4000 0.5000
0.1000 0.2000 0.3000 0.4000 0.5000
0.1000 0.2000 0.3000 0.6000 0.5000
0.1000 0.2000 0.3000 0.6000 0.5000
0.1000 0.2000 0.7000 0.4000 0.5000
0.1000 0.2000 0.7000 0.4000 0.5000
0.1000 0.2000 0.7000 0.6000 0.5000
0.1000 0.2000 0.7000 0.6000 0.5000
0.1000 0.8000 0.3000 0.4000 0.5000
0.1000 0.8000 0.3000 0.4000 0.5000
0.1000 0.8000 0.3000 0.6000 0.5000
0.1000 0.8000 0.3000 0.6000 0.5000
0.1000 0.8000 0.7000 0.4000 0.5000
0.1000 0.8000 0.7000 0.4000 0.5000
0.1000 0.8000 0.7000 0.6000 0.5000
0.1000 0.8000 0.7000 0.6000 0.5000
0.9000 0.2000 0.3000 0.4000 0.5000
0.9000 0.2000 0.3000 0.4000 0.5000
0.9000 0.2000 0.3000 0.6000 0.5000
0.9000 0.2000 0.3000 0.6000 0.5000
0.9000 0.2000 0.7000 0.4000 0.5000
0.9000 0.2000 0.7000 0.4000 0.5000
0.9000 0.2000 0.7000 0.6000 0.5000
0.9000 0.2000 0.7000 0.6000 0.5000
0.9000 0.8000 0.3000 0.4000 0.5000
0.9000 0.8000 0.3000 0.4000 0.5000
0.9000 0.8000 0.3000 0.6000 0.5000
0.9000 0.8000 0.3000 0.6000 0.5000
0.9000 0.8000 0.7000 0.4000 0.5000
0.9000 0.8000 0.7000 0.4000 0.5000
0.9000 0.8000 0.7000 0.6000 0.5000
0.9000 0.8000 0.7000 0.6000 0.5000

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 MATLAB 的更多信息

标签

尚未输入任何标签。

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by