Checking duplicateentries in a large matrix

Hi all,

I have a very large matrix (901x1801) which I generated by combining values of three similar arrays (with repeated values in them) to generate unique codes using a mathematical expression. The matrix is filled with these codes.

My question is*...* How can I check that each values of the matrix (901x1801) is unique and not repeating even a single time?

Or... Can anyone tell me how can I generate a matrix by combining three arrays of similar elements in a way that each generated value will be unique.

an early reply will be greatly appreciated. Thanks in advance.

Answer 1

[Mahdi]

I would recommend looking at the unique() function in MATLAB.

In your case, it seems that you want to have unique values, so it would basically be

Matrix2=unique(Matrix1)

This would generate Matrix2 with unique, non-repeating values, and sorts them in increasing order.

[Mahdi]

You can also use [C, C1, A1]=unique(Matrix1) to get where these values are. Look at the link for unique that I posted for more variations.