Find differences between 2 tables

I have to tables, an old one and a new one.

Is there a function or a way to check what the differences are between 2 tables based on checking rows?

So in this example, my output needs to be row 2 cause the other rows are identical.

Answer 1

[Voss]

If your tables are the same size and both contain all numeric data, then this would work:

% create some tables:
t1 = table([1;2;3],[4;5;6],[7;8;9])

t1 = 3×3 table
    Var1    Var2    Var3
    ____    ____    ____

     1       4       7  
     2       5       8  
     3       6       9  

t2 = table([1;2;3],[4;15;6],[7;8;9])

t2 = 3×3 table
    Var1    Var2    Var3
    ____    ____    ____

     1        4      7  
     2       15      8  
     3        6      9  

% find rows that are different:
row_different = find(~all(t1{:,:} == t2{:,:},2))

row_different = 2

Answer 2

[Cris LaPierre]

You could try using setdiff.

If A and B are tables or timetables, then setdiff returns the rows from A that are not in B.

Answer 3

[dpb]

ix=(any(A{:,:}~=B{:,:},2)&all(isfinite([A{:,:} B{:,:}]),2))|(all(isnan(A{:,:})~=isnan(B{:,:}),2));

This is somewhat tricky because NaN compares as isequal() to nothing, including itself so it will always show up.