Question

假设我有一个时间值，例如：2012-03-28_15:10:00 然后我有一个存储多个时间值的刺痛：

2012-03-28_14:00:00
2012-03-28_14:10:00
2012-03-28_14:20:00
2012-03-28_14:30:00
2012-03-28_14:40:00
2012-03-28_14:50:00
2012-03-28_15:00:00
2012-03-28_15:05:00
2012-03-28_15:20:00
2012-03-28_15:30:00

我想在字符串中找到最接近原始时间值的时间值。有谁知道在matlab中如何做到这一点？

Answer 1

<强>代码

data1 = '2012-03-28_15:10:00'
data2 = [
'2012-03-28_14:00:00'
'2012-03-28_14:10:00'
'2012-03-28_14:20:00'
'2012-03-28_14:30:00'
'2012-03-28_14:40:00'
'2012-03-28_14:50:00'
'2012-03-28_15:00:00'
'2012-03-28_15:05:00'
'2012-03-28_15:20:00']

[~,ind1] = min(abs(datenum(data2)-datenum(data1)));
closest_time = data2(ind1,:)

<强>输出

closest_time =

2012-03-28_15:05:00

扩展部分：如果您有许多日期，作为字符矩阵并与列表进行比较，那么使用bsxfun方法可能是更好的解决方案，因为它避免了循环。如下所示 -

<强>代码

data1 = [
'2012-03-28_14:02:00'
'2012-03-28_14:11:00'
'2012-03-28_14:23:00'
'2012-03-28_14:32:00']

data2 = [
'2012-03-28_14:00:00'
'2012-03-28_14:10:00'
'2012-03-28_14:20:00'
'2012-03-28_14:30:00'
'2012-03-28_14:40:00'
'2012-03-28_14:50:00'
'2012-03-28_15:00:00'
'2012-03-28_15:05:00'
'2012-03-28_15:08:00']

[~,ind1] = min(abs(bsxfun(@minus,datenum(data2),datenum(data1)')));
closest_time = data2(ind1,:)

<强>输出

closest_time =

2012-03-28_14:00:00
2012-03-28_14:10:00
2012-03-28_14:20:00
2012-03-28_14:30:00

如何在matlab中找到给定时间值的最接近时间值

1 个答案: