Vel = [1,3,6,22,25,33;
11,12,15,12,15,67;
1,32,21,4,25,3;
11,12,5,33,15,7;
11,32,6,2,25,33;
1,0,0,0,12,22;
0,31,6,4,0,0;
12,6,5,5,8,7 ];
for i=1:width(Vel)
idx = find(Vel(:,i)==0, 1, 'first');
Vel(idx:end, i)=0;
end
Vel