查找点B在Matlab中位于哪个间隔 [英] Find which interval a point B is located in Matlab

问题描述

我有一个间隔A的数组，我必须找到一个点B，该点位于A中的这些间隔之一之间.我无法通过A循环查找间隔. 例如:

I have an array of intervals A and I must find a point B that lays in between one of these intervals in A. I cannot loop thru A to find the interval. For ex:

A = [1 3 4 6 10];


1 3
3 4
4 6
6 10

if B =2.3
returns 1

if B = 6.32
return 4

推荐答案

假设间隔按升序排列，则可以使用注释中指出的find(B < A, 1) - 1.如果B超出整个范围，则将返回一个空矩阵.如果不希望这样，您可以在之前添加检查.

Assuming the intervals are in ascending order, you can use find(B < A, 1) - 1 as pointed out in the comments. This will return an empty matrix if B is outside the whole range. If this is undesirable you could add in a check before.

function interval = findInterval(A,B)
    if B > A(1) && B < A(end)
        interval = find(B < A, 1) - 1;
    else
        error('Interval is out of the range specified')
    end
end

这篇关于查找点B在Matlab中位于哪个间隔的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！