Sort Matlab table based on pre-defined order

26 views (last 30 days)
I would like to sort a table based on a column that only contains 4 string values (A, B, C, and d) in an specific order that is not alphabetic.
This is what I am currently using:
sortrows(table_1,{'col1','col2'},{'ascend' 'descend'})
For col2 I would like to use a custom order that is neither ascend nor descend. So for instance the sorting order should be:

Accepted Answer

Stephen23 on 31 Jan 2022
Edited: Stephen23 on 31 Jan 2022
You could do something like this, where C is that column:
D = {'B';'A';'C';'D'}; % the desired order
C = {'C';'C';'A';'D';'B';'C';'A';'D';'B'} % the column to sort
C = 9×1 cell array
{'C'} {'C'} {'A'} {'D'} {'B'} {'C'} {'A'} {'D'} {'B'}
[X,Y] = ismember(C,D);
[~,Z] = sort(Y);
D = C(Z) % of course you would sort the table e.g. T(Z,:)
D = 9×1 cell array
{'B'} {'B'} {'A'} {'A'} {'C'} {'C'} {'C'} {'D'} {'D'}

More Answers (1)

Turlough Hughes
Turlough Hughes on 31 Jan 2022
Try the following:
idx = [2 1 3 4];
T(idx,:) = T


Find more on Matrices and Arrays 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!

Translated by