One approach:
t_pc = [ 1 1
2 2
3 1
4 2
6 3
8 2];
t_pc2 = [min(t_pc):max(t_pc); zeros(1,numel(min(t_pc):max(t_pc)))].';
t_pc2(t_pc(:,1),2) = t_pc(:,2)
producing:
t_pc2 =
1 1
2 2
3 1
4 2
5 0
6 3
7 0
8 2
A more efficient version:
t_pc2 = (min(t_pc):max(t_pc)).';
t_pc2(t_pc(:,1),2) = t_pc(:,2)
.
