Frequency of unique rows

3 次查看（过去 30 天）

Avik Mahata 2018-9-13

评论： Avik Mahata 2018-9-13

I want to count the frequency of the similar rows in a very long matrix. I have one million rows. I want something like below,

I have a matrix like below,

[0 0 0 0

0 0 0 0

0 0 0 1

0 0 0 2

0 0 0 2]

And I am looking for an output like below,

[0 0 0 0 2

0 0 0 1 3

0 0 0 2 2]

Thanks

Andrei Bobrov 2018-9-13

编辑：Andrei Bobrov 2018-9-13

a = [0 0 0 0
0 0 0 0
0 0 0 1
0 0 0 1
0 0 0 1
0 0 0 2
0 0 0 2];
[aa,~,c] = unique(a,'rows');
out = [aa, histcounts(c,1:max(c)+1)'];

Avik Mahata 2018-9-13

Tremendous help.

Thanks

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

Find the treasures in MATLAB Central and discover how the community can help you!

Translated by