Creating Own Time Variable from Datetime Data

Hello! I am currently trying to create a timeseries plotting of wind averages. Currently, my time variable is in the format MM/DD,YYYY HH:MM, however, it repeats for 20 data points until it changes to the next minute. Example, 08/26/2020 12:00 --> 20 values --> 21st data point 08/26/2020 12:01. I am trying to create my own time variable for a six-hour period that I am interested in plotting for a time vs wind plot. I originally used:

<< plot(time1(18571:1:25552),wavg1(18571:1:25552)); where 18571-->25552 corresponds to the datapoint for 04:00 -- 10:00 local time of the interesting period.

This code worked, however, it made the plot look funky with the multitude of values for each minute.

I am now trying:

<< timesec = [14400:3:36000] 14400/3600(seconds in an hour) = 4 36000/3600 = 10

I hope someone can help me convert my datetime time variable into working with a new time variable, thanks.

Answer 1

[Stephen23]

"I hope someone can help me convert my datetime time variable into working with a new time variable, thanks. "

Your question does not show any datetime variable.

Using datetime & duration objects is simpler than messing around with fractions like you are doing:

DT = datetime(2020,8,26,4,0,0):seconds(3):datetime(2020,8,26,10,0,0);
DT = DT(:)

DT = 7201×1 datetime array
   26-Aug-2020 04:00:00
   26-Aug-2020 04:00:03
   26-Aug-2020 04:00:06
   26-Aug-2020 04:00:09
   26-Aug-2020 04:00:12
   26-Aug-2020 04:00:15
   26-Aug-2020 04:00:18
   26-Aug-2020 04:00:21
   26-Aug-2020 04:00:24
   26-Aug-2020 04:00:27
   26-Aug-2020 04:00:30
   26-Aug-2020 04:00:33
   26-Aug-2020 04:00:36
   26-Aug-2020 04:00:39
   26-Aug-2020 04:00:42
   26-Aug-2020 04:00:45
   26-Aug-2020 04:00:48
   26-Aug-2020 04:00:51
   26-Aug-2020 04:00:54
   26-Aug-2020 04:00:57
   26-Aug-2020 04:01:00
   26-Aug-2020 04:01:03
   26-Aug-2020 04:01:06
   26-Aug-2020 04:01:09
   26-Aug-2020 04:01:12
   26-Aug-2020 04:01:15
   26-Aug-2020 04:01:18
   26-Aug-2020 04:01:21
   26-Aug-2020 04:01:24
   26-Aug-2020 04:01:27

Y = rand(7201,1);
plot(DT,Y)