getting the index after comparing two logicals

3 次查看（过去 30 天）
cgo
cgo 2022-7-20
回答： Mathieu NOE 2022-7-20
I compared two logicals and their results are as follows: a = [1 0 0 0 1] and b = [0 0 0 0 1]
  1. I wanted to compare these logicals, identifying the corresponding columns where both 1's appear.
  2. Identify which column that is: in this case, column 5.
Thanks

请先登录，再回答此问题。

回答（2 个）

DGM
DGM 2022-7-20
Ran in:
Something like this:
a = [1 0 0 0 1];
b = [0 0 0 0 1];
idx = find(a & b)
idx = 5
Though depending on your needs, the usage of find() may be an unnecessary complication, as the intersection of the two vectors can likely be used for logical indexing just the same.
Mathieu NOE
Mathieu NOE 2022-7-20
hello
see code below :
a = logical([1 0 0 0 1])
b = logical([0 0 0 0 1])
c = a & b
col_c_is_one = find(c)
gives the following results :
a = 1×5 logical array : 1 0 0 0 1
b = 1×5 logical array : 0 0 0 0 1
c = 1×5 logical array : 0 0 0 0 1
col_c_is_one = 5

类别

在 Help Center 和 File Exchange 中查找有关 Matrices and Arrays 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