How to read time as string data from excel file

29 views (last 30 days)
I used readtable to read time from excel spread sheets. The time was converted to double like e.x. But I want to read time as original form. How does read time as string?
e.x 10:11:09 AM => 0.42858

Accepted Answer

Yutaka Yamada
Yutaka Yamada on 24 May 2021
How about the below code if you want to use readtable?
opts = detectImportOptions('readTime.xlsx');
opts.VariableTypes = 'datetime';
T = readtable('readTime.xlsx', opts);
for i = 1:3
a = T{i, 1};
a.Format = 'HH:mm:ss a';
I've attached the Excel file that I've used for this test also.
Yasuyuki Hamanaka
Yasuyuki Hamanaka on 24 May 2021
I found the function setvaropts.
opts = detectImportOptions('input.xlsx');
opts = setvartype(opts,{'Var2'},'datetime');
opts = setvaropts(opts,{'Var2'},'DatetimeFormat','HH:mm:ss a');
schedule = readtable('input.xlsx',opts);
Thank you everyone for helping me. Your information were very helpful and I learned a lot.

Sign in to comment.

More Answers (1)

Sulaymon Eshkabilov
Sulaymon Eshkabilov on 24 May 2021
You should try using xlsread() in this case. In fact, xlsread is slower than readtable().
Then you can employ datenum() and datestr() if necessary.
Good luck.
  1 Comment
Yasuyuki Hamanaka
Yasuyuki Hamanaka on 24 May 2021
Thank you for answering my question. I want to use readtable because the amount of data is so large that reading data takes long. But I didn't know the fucntion of datenum() and datestr(), so it is very helpful for me.

Sign in to comment.


Find more on Tables in Help Center and File Exchange

Community Treasure Hunt

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

Start Hunting!