How to use Uniquetol without sorting?
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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
2019-7-12
[~, 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 个评论
Bruno Luong
2020-10-28
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
2021-11-23
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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