MATLAB: Matlab Matrix: Eliminating Duplicate Entries

Question

Hello, all, thanks for reading this post.

I have a problem with a point coordinate matrix I create. I output the matrix correctly, but one of the bugs in the program I inherited is every point after point 1 is duplicated. I looks something like:

         0         0         0
         0         0    3.0000
         0         0    3.0000
         0    1.4225    4.8659
         0    1.4225    4.8659
         0   -1.4269    4.8520
         0   -1.4269    4.8520
    1.1125    2.3073    6.0264
    1.1125    2.3073    6.0264
   -1.1160    2.3007    6.0177
   -1.1160    2.3007    6.0177
    1.1086   -2.3144    6.0039
    1.1086   -2.3144    6.0039
   -1.1120   -2.3078    5.9953
   -1.1120   -2.3078    5.9953

for 8 coordinates (and 7 connections, as this is a binary tree).

Is there a way to output a new point coordinate matrix where I have 8 rows, and no duplicate points?

Thanks

Edit: unique(A,'rows') will work in my case (because the point coordinates are exactly the same), but when I use it it outputs the coordinates in alpha-numeric order. Is there a way to output the coordinates in their original order, minus the duplicates?

Answer 1

unique(A,'rows')