Remove the entire row from the matrix on the basis of column having duplicate value

Hello Guys I have a matrix A that contains duplicate values in row 3,4 from column 3 to 6. I want to remove the entire 4th row, or both rows, how can i do it without using the loop?. what if i have similar problem in more rows, what's the syntax for this? I want to solve it in 1 line, help me to solve the problem. Thanks

[Walter Roberson]

Will the duplicates always be in adjacent rows?

[Ahsan Abbas]

No it's not, but if we can sort it on the basis of 3rd column then it will be adjacent rows.

[Image Analyst]

You may have to give up the one line requirement unless you want to just string multiple lines of code together on one line, which you can do. I think you could do that with Jan's 2 line code below.

Answer 1

[Jan]

This removes all rows of the matrix Data, which have repeated values in the 3rd column. The first occurence is kept:

[C, IA] = unique(Data(:, 3), 'stable');
Data    = Data(iA, :);

[Ahsan Abbas]

Thanks Jan Simon problem is solved...