unique

Hi,

I have a matrix (1000*6). I want to delete duplicate rows. Then I want to know which row have been deleted since I have another matrix in which I want to delete the same rows.

I'm not sure I understood completely the function 'unique'.

I'm a bit confused by the ordering, are the new matrix not keeping the row sequence as in the original matrix?

Regards

Answer 1

[Matt Kindig]

Take a look at the second and third outputs in the documentation for 'unique', to see how to determine which rows were deleted.

The result of unique is sorted-- you can use the outputs to restore them to their original ordering.