3.0 | 1 rating Rate this file 12 downloads (last 30 days) File Size: 1.32 KB File ID: #25187

unique_no_sort_rows

31 Aug 2009 (Updated 31 Aug 2009)

find unique rows of a matrix without resorting the rows

File Information
Description	Similar unique_no_sort in functionality, but adds the ability to find unique rows.
MATLAB release	MATLAB 7.8 (R2009a)
Zip File Content
Other Files	license.txt, unique_no_sort_rows.m

Tags for This File
Everyone's Tags	cell array, matrices, matrix, rows, unique, unsorted, vector
Tags I've Applied
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Comments and Ratings (3)
31 Aug 2009	us	does not work on matrices M x N with N > 2, since your statement B = unsorted(:,2:3); should read B = unsorted(:,2:end); us
31 Aug 2009	Michael Petralia	fixed this. file should now work with M x N matrices, N>2
02 Sep 2009	Johnson Wong	Must simpler would be: [unique_sorted,i,j] = unique(A,'rows','first'); B = A(sort(i),:);

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Updates
31 Aug 2009	modified the output of the code to not include a column of indices.
31 Aug 2009	made function extend to MxN matrices with N>2
31 Aug 2009	uploaded correct file

Tag Activity for this File
Tag	Applied By	Date/Time
cell array	Michael Petralia	31 Aug 2009 15:01:09
unique	Michael Petralia	31 Aug 2009 15:01:10
matrix	Michael Petralia	31 Aug 2009 15:01:10
matrices	Michael Petralia	31 Aug 2009 15:01:10
unsorted	Michael Petralia	31 Aug 2009 15:01:10
vector	Michael Petralia	31 Aug 2009 15:01:10
rows	Michael Petralia	31 Aug 2009 15:01:10

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