How to use Uniquetol without sorting?
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AMEHRI WALID
el 12 de Jul. de 2019
Comentada: Min Zhang
el 23 de Nov. de 2021
Hello everyone,
I'm using the function "Uniquetol" to remove the duplicate vector from a matrix A which the size is (3, 10).
B = ( uniquetol(A', 1e-6, 'ByRows', 1) )';
It works very well, but it is also sorting my matrix which what I don't want
Please, can anyone tell how can we use the function "Uniquetol" without sorting ?
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Guillaume
el 12 de Jul. de 2019
[~, colindices] = uniquetol(A', 1e-6, 'ByRows', true); %get indices of unique value. Is sorted BY VALUE
B = A(:, sort(colindices)) %Use the indices sorted BY INDEX instead
4 comentarios
Bruno Luong
el 28 de Oct. de 2020
Both solutions are equally valid. They respect the order in the original matrix.
Sorry Huy, there is not reason your solution is right and other is wrong.
Min Zhang
el 23 de Nov. de 2021
Try this:
A = [0.05 0.11 0.18; ...
0.46 0.52 0.76;...
0.34 0.36 0.41; ...
0.18 0.21 0.29; ...
0.46 0.52 0.76;...
0.05 0.11 0.18;];
%
[~, colindices] = uniquetol(A, 'ByRows', true)
sort(colindices)
% get indices of unique value. Is sorted BY VALUE
B = A(sort(colindices),:)
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