Cannot use find() inorder to find the index of a time in datetime array

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Mathan
Mathan 2022-4-11
评论： Mathan 2022-4-11
Hello,
I was trying to find the index of a particular time having datetime format (attached here as time.mat). I tried the usual find() inorder to find the index of an element but am constantly getting a 0×1 empty double column vector.
For example, I tried the following.
t=load('time.mat');
time=t.a; % a: [101×1 datetime]
index = find(time=='02-Dec-2014 07:05:25')
which gives me
0×1 empty double column vector.
Not sure why that is happening even though '02-Dec-2014 07:05:25' is present as the last element in the array.
Thank you for any help.

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Matt J
Matt J 2022-4-11
编辑：Matt J 2022-4-11
Ran in:
Because you have sub-second precision in "t.a",
t=load('time.mat');
t.a(end)
ans = datetime
02-Dec-2014 07:05:25
seconds( t.a(end) - datetime('02-Dec-2014 07:05:25'))
ans = 0.6015
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Matt J
Matt J 2022-4-11
t=load('time.mat');
tmin=min(t.a);
time=seconds(t.a-tmin);
N=numel(time);% a: [101×1 datetime]
index = interp1(time,1:N, seconds(datetime('02-Dec-2014 07:05:25')-tmin),'nearest')

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