How to compare rows from two arrays and delete the different column

Hello Everyone,

if true
  % code
end
I have two array Arr1 = 1  2  6
                        2  4  8
                        5  6  4
                        8  1  10

if true
  % code
endand I have another Arr2 = 1  2  3
                             2  3  4
                             5  6  7
                             8  9  10
                             11 12 13

I want to remove the common elements from both arrays

so my result should look like

if true
  % code
end              Arr1 = 1  2  6
                        5  6  4
                 Arr2 = 1  2  3
                        5  6  7
How can I solve this problem

[Stephan]

Can you explain the thoughts that lead to your expected results?

Answer 1

[Image Analyst]

Maybe use ismember() with the rows option:

Arr1 = [1  2  6;
  2  4  8;
  5  6  4;
  8  1  10]

Arr2 = [1  2  3;
  2  3  4;
  5  6  7;
  8  9  10;
  11 12 13]

[ia, ib] = ismember(Arr1(:, 1:2), Arr2(:, 1:2), 'rows')
Arr1 = Arr1(ia, :)
Arr2 = Arr2(ia, :)

You'll see in the command window:

ia =
  4×1 logical array
   1
   0
   1
   0
ib =
     1
     0
     3
     0
Arr1 =
     1     2     6
     5     6     4
Arr2 =
     1     2     3
     5     6     7