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Adding time and date column to text file

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Dung Tran
Dung Tran 2021 年 3 月 24 日
コメント済み: Dung Tran 2021 年 3 月 24 日
I have a txt file with thousand of rows and 8 columns, example for 1 row is below
1111 2222 3333 4444 5555 6666 7777 8888
I want to add date and time as format below
3/24/2021 3:33:30 PM 1111 2222 3333 4444 5555 6666 7777 8888
Logging started 3/24/2021 at 3:33:30 and it logged after every 2 second. so the time should increase by 2 second for each row until the last n row.
3/24/2021 3:33:30 PM 1111 2222 3333 4444 5555 6666 7777 8888
3/24/2021 3:33:32 PM 1312 2003 3133 4423 5232 6123 7712 8812
.
.
.
3/25/2021 1:12:15 AM 3132 3123 5645 3242 3546 1321 1313 1215 ( this an example of the last ending row)
Please help me in this case. thank you very much.

回答 (1 件)

Adam Danz
Adam Danz 2021 年 3 月 24 日
  1. Read in the file
  2. Create vector of datetime values (see below)
  3. Create a time table with the datetime vector and data from the file
  4. Use writetimetable to write the data back into a text file.
To create the datetime vector
n is the number of rows of data which you can get after reading in the file.
n = 1000;
startingDate = datetime(2021,3,24,15,33,30,'Format','MM/dd/yyyy hh:mm:ss a');
t = startingDate + seconds(0:2:n*2-1)'
t = 1000×1 datetime array
03/24/2021 03:33:30 PM 03/24/2021 03:33:32 PM 03/24/2021 03:33:34 PM 03/24/2021 03:33:36 PM 03/24/2021 03:33:38 PM 03/24/2021 03:33:40 PM 03/24/2021 03:33:42 PM 03/24/2021 03:33:44 PM 03/24/2021 03:33:46 PM 03/24/2021 03:33:48 PM 03/24/2021 03:33:50 PM 03/24/2021 03:33:52 PM 03/24/2021 03:33:54 PM 03/24/2021 03:33:56 PM 03/24/2021 03:33:58 PM 03/24/2021 03:34:00 PM 03/24/2021 03:34:02 PM 03/24/2021 03:34:04 PM 03/24/2021 03:34:06 PM 03/24/2021 03:34:08 PM 03/24/2021 03:34:10 PM 03/24/2021 03:34:12 PM 03/24/2021 03:34:14 PM 03/24/2021 03:34:16 PM 03/24/2021 03:34:18 PM 03/24/2021 03:34:20 PM 03/24/2021 03:34:22 PM 03/24/2021 03:34:24 PM 03/24/2021 03:34:26 PM 03/24/2021 03:34:28 PM
  1 件のコメント
Dung Tran
Dung Tran 2021 年 3 月 24 日
that works really good. Thank you Mr. Adam

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