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How to add datetime from seconds?

Asked by hanif hamden on 29 May 2019
Latest activity Commented on by hanif hamden on 13 Jun 2019
I have txt file as attached.
I have initial date time on the first row.. How i want to add this datetime with seconds for each row from first column?
This is example of my coding:
%% Input data
A = dlmread('ex1.txt');
% Identify year, month, day, hour, minute, second [Y,M,D,H,Mn,S]
Y = A(1,1); M = A(1,2); D = A(1,3); H = A(1,4); Mn = A(1,5); S = A(1,6);
dt = datetime(Y,M,D,H,Mn,S)
% Identify parameter after 2nd Row
Ts = seconds(A(2:end,1)); lat = A(2:end,2); lon = A(2:end,3); h = A(2:end,4);
dt.Second = dt.Second + Ts
When I run, the error showed like this:
Error using Test (line 12)
Numeric input data must be real.

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1 Answer

Answer by Peter Perkins
on 4 Jun 2019
 Accepted Answer

That's not the error that I get, but it's possible that you are using an older version with different error handling.
In any case: The .Seconds property of a datetime, like all six of the time component properties, is a raw numeric value (it's the .Second property after all, there'd be no point in it having units). You are trying to add a duration to it. You want to either do this:
dt.Second = dt.Second + A(2:end,1)
or (better) this:
dt = dt + seconds(A(2:end,1))

  1 Comment

Now I got it. Thank you very much sir!

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