Sort cell array by datetime

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Tycho Maas
Tycho Maas on 23 Dec 2020
Answered: Eric Sofen on 5 Jan 2021
I want to sort an array, that looks like the one below, by datetime.
70 26-Nov-2020 10:50:29
84 26-Nov-2020 10:00:00
79.5 26-Nov-2020 14:35:20
53 29-Nov-2020 12:31:00
Any idea how to do this?

Accepted Answer

Jemima Pulipati
Jemima Pulipati on 26 Dec 2020
From my understanding, you want to sort the rows in the cell array according to the datetime values mentioned in the column.
You may use the sort() function which sorts the elements of the input in the order specified.
Here is an example code (sorts in ascending order) using the data you mentioned:
% sample cell array
a = {70, '26-Nov-2020 10:50:29';
84, '26-Nov-2020 10:00:00';
79.5, '26-Nov-2020 14:35:20';
53, '29-Nov-2020 12:31:00'};
[~, idx] = sort(datenum(a(:,2), 'dd-mm-yyyy hh:MM:ss'), 1, 'ascend');
sortedData = a(idx,:);
Here are some answers from the community which might be of relevance to you:

More Answers (1)

Eric Sofen
Eric Sofen on 5 Jan 2021
Even better, since you're working with data where each column has a different type, consider using a timetable.
t = table2timetable(cell2table(a));
t = sortrows(t);


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