two dimensional unique values in Matlab

0
votes

I have two vectors, one of them stores the width dimension of a set of images and another one the height of these set of images.

I want to use these values as two dimensional vectors [width height] and store them in a matrix. The first line, for instance, keeps the widths and the second line, the heights.

Is it possible to use the unique() function in matlab to return two dimensional unique values? I mean, the values can repeat in one dimension but the two dimensions cannot be the same as another vector?

How to do that in Matlab?

One example: given the following matrix, each column has a two dimensional vector. I want two dimensional unique vectors. The values can repeat in one dimension but not in both.

What I have:

[1,2,3,1;
 4,5,6,4]

I want as output:

[1,2,3;
 4,5,6]
1
arraysmatlab
If i understand your question, yes. its possible with unique with rows option - Santhan Salai
give us some two-row matrix and the desired final one, because I can't understand it well. - SamuelNLP

1 Answers

5
votes

See docs for unique.

Assuming widths and heights are column vectors,

[C,ia,ic] = unique([widths, heights],'rows')

In contrary, if widths and heights are row vectors,

[C,ia,ic] = unique([widths; heights].','rows')