How to filter multiple columns with conditions

I am trying to filter column 4 and column 6 of the table below:

I am using the "find" function - DV1 = find((DV.Veh1Type == 630) & (DV.Veh1Type == 640) & (DV.Veh2Type == 640) & (DV.Veh2Type == 630) ) but my cell is a 0×1 empty double column vector.

Can someone assist me with advice on a function that can be used to filter those columns so that only the vehicle type with number 630 and 640 remains in both columns?

Answer 1

[Walter Roberson]

row_is_selected = ismember(VD.Veh1Type, [630 640]) & ismember(VD.Veh2Type, [630 640]);

subset = DV(row_is_selected, :);

[Jana Sarran]

Thank you! This code worked.

[Peter Perkins]

In other words, some of those &'s needed to be |'s. Which is what ismember does.