Parsing variable in table

2 次查看（过去 30 天）
Inna Pelloso
Inna Pelloso 2022-11-17
评论： Star Strider 2022-11-17
Hi,
I have a 3x1 table, with one variable, timestamp:
timestamp
2021-02-01 09:00:00
2021-02-01 09:01:00
2021-02-01 09:02:00
How can I parse this to create a 3x2 table, with two variables, date and time:
date time
2021-02-01 09:00:00
2021-02-01 09:01:00
2021-02-01 09:02:00
Any help would be appreciated!
IP
  2 个评论
Stephen23
Stephen23 2022-11-17
编辑：Stephen23 2022-11-17
Note that changing the FORMAT does not changes the actual date/time values stored in the DATETIME object, it only changes how the DATETIME object looks when displayed or converted to text.
If you actually want to have the data consist only of the date and time values separately, then use DATESHIFT and TIMEOFDAY.
Inna Pelloso
Inna Pelloso 2022-11-17
Thank you for your help, Stephen! I really appreciate it!
Inna

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2022-11-17
编辑：Star Strider 2022-11-17
Ran in:
Try something like this —
T1 = table(datetime(['2021-02-01 09:00:00'
'2021-02-01 09:01:00'
'2021-02-01 09:02:00']), 'VariableNames',{'timestamp'})
T1 = 3×1 table
timestamp ____________________ 01-Feb-2021 09:00:00 01-Feb-2021 09:01:00 01-Feb-2021 09:02:00
date = T1.timestamp;
time = T1.timestamp;
date.Format = 'yyyy-MM-dd';
time.Format = 'HH:mm:ss';
T1 = addvars(T1,date,time);
T1 = removevars(T1,'timestamp')
T1 = 3×2 table
date time __________ ________ 2021-02-01 09:00:00 2021-02-01 09:01:00 2021-02-01 09:02:00
There may also be other ways to do this.
EDIT — (17 Nov 2022 at 13:16)
I was not certain what you wanted.
Try this —
T1 = table(datetime(['2021-02-01 09:00:00'
'2021-02-01 09:01:00'
'2021-02-01 09:02:00']), 'VariableNames',{'timestamp'})
T1 = 3×1 table
timestamp ____________________ 01-Feb-2021 09:00:00 01-Feb-2021 09:01:00 01-Feb-2021 09:02:00
[y,m,d] = ymd(T1.timestamp); % Year, Month, Day Only
date = datetime([y,m,d]); % Convert Back To 'datetime'
time = timeofday(T1.timestamp); % Time Of Day Only
T1 = addvars(T1,date,time);
T1 = removevars(T1,'timestamp')
T1 = 3×2 table
date time ___________ ________ 01-Feb-2021 09:00:00 01-Feb-2021 09:01:00 01-Feb-2021 09:02:00
.
  4 个评论
显示 2更早的评论
Star Strider
Star Strider 2022-11-17
As always, my pleasure!

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Dates and Time 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by