Changing the values of a column in a table.
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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 件のコメント
回答 (1 件)
per isakson
2021 年 1 月 28 日
編集済み: per isakson
2021 年 1 月 28 日
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 件のコメント
Walter Roberson
2021 年 1 月 29 日
Cast1.Var1 = datetime(Cast1.Var1, 'InputFormat', 'MM/dd/yyyy', 'Format', 'MM-dd-yyyy hh:mm:ss.SSSS') + Cast1.Var2;
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