清空筛选条件
清空筛选条件

Add values to vector

4 次查看（过去 30 天）
AM
AM 2018-10-9
编辑： Stephen23 2018-10-9
I have the following vectors A and B
A= [20 80 -1 0.1 0.05 0.25 0.13 0.12 0.35 21 70 -1 0.1 0.2 0.7 20 77 -1 0.15 0.15 0.7];
B= [1 1 1 1 1 1 1 0 1 1 1 1 0 0 1 1 1 0 0 1 1 1 0 0 0 0 1 1 1 1];
And I would like to create vector C
C= [20 80 -1 0.1 0.05 0.25 0.13 0 0.12 0.35 21 70 0 0 -1 0.1 0.2 0 0 0.7 20 77 0 0 0 0 -1 0.15 0.15 0.7];
I use
I=find(B==0);
to find the indices of B where there is a 0 and I thought about inserting a zero in A in those indices but I do not know how. I also thought about somehow replacing the 1 in B by values of A but again I do not how to do this.
Is there any way to do this?
Thanks in advance

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2018-10-9
编辑：Stephen23 2018-10-9
"I also thought about somehow replacing the 1 in B by values of A"
You can use logical indexing. Here is an example that will work if B is either logical or numeric, and does not overwrite the existing variables:
C = double(B);
C(B==1) = A
If B is numeric and you don't mind overwriting its values, then you just need this:
B(B==1) = A

更多回答（1 个）

Adam
Adam 2018-10-9
B( B == 1 ) = A

类别

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

标签

产品


版本

R2017b

Community Treasure Hunt

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

Start Hunting!

Translated by