Changing the values of a column in a table.
2 views (last 30 days)
Show older comments
If I have a table ..datafi{1}.. and I want to change the time column, t, from all the times being different to all the times being the same time as the first time listed in the column, how do I do that in Matlab?
0 Comments
Answers (1)
per isakson
on 28 Jan 2021
Edited: per isakson
on 28 Jan 2021
This statement does it
tbl.t = tbl.t(ones(height(tbl),1)); % once refered to as "Tony's trick"
Example:
%% Create a sample table
t = datetime('now');
t.Format = t.Format + ".SSSS";
x = (1:5).';
t = sort(t + seconds(5*randn(5, 1)));
tbl = timetable(t,x)
%% Change the time column
tbl.t = tbl.t(ones(height(tbl),1));
tbl
Output
tbl =
5×1 timetable
t x
_________________________ _
28-Jan-2021 11:19:16.7425 1
28-Jan-2021 11:19:23.1767 2
28-Jan-2021 11:19:27.0657 3
28-Jan-2021 11:19:27.1190 4
28-Jan-2021 11:19:38.6666 5
tbl =
5×1 timetable
t x
_________________________ _
28-Jan-2021 11:19:16.7425 1
28-Jan-2021 11:19:16.7425 2
28-Jan-2021 11:19:16.7425 3
28-Jan-2021 11:19:16.7425 4
28-Jan-2021 11:19:16.7425 5
2 Comments
Walter Roberson
on 29 Jan 2021
Cast1.Var1 = datetime(Cast1.Var1, 'InputFormat', 'MM/dd/yyyy', 'Format', 'MM-dd-yyyy hh:mm:ss.SSSS') + Cast1.Var2;
See Also
Categories
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!