comparing two vectos and inserting where numbers are missing

Hi, Have tried various things. I have 2 vectors - a control vector called time (say m by 1) and a matrix call it b of (n by 2) m >n for example

time               b
1000               1000      5 
2000               2000      10
3000               4000      15
4000               5000      18
5000               6000      20
6000               8000      25
7000               9000      30
8000
9000
10000

i want matrix b to fill in the missing times (ie where missing) and a corresponding value in coloumn 2 of 0

so the output would look like

               1000      5   
               2000      10
               3000      0     (this line is new)
               4000      15     
               5000      18
               6000      20
               7000       0     (this line is new)         
               8000      25
               9000      30
               10000     0      (this line is new)
i have mangaged to index the missing spaces with

ind = find(ismember(time,b(:,1)) ==0) which returns 3 7 10 ie the missing places but not sure where to go. more than happy to ignore totlaly what i have done so far.

Answer 1

[Jan]

time = (1000:1000:10000).';
b = [1000      5; ...
     2000      10; ...
     4000      15; ...
     5000      18; ...
     6000      20; ...
     8000      25; ...
     9000      30];
found  = ismember(time, b(:, 1));
result(found, 2) = b(:, 2);
result(:, 1)     = time;

Answer 2

[Azzi Abdelmalek]

             b=[1000      5   
               2000      10
               3000      0     
               4000      15     
               5000      18
               6000      20
               7000       0             
               8000      25
               9000      30
               10000     0 ]
           t=b(:,1)
           y=b(:,2)
           t1=t(find(y));
           y1=y(find(y));
           yi=interp1(t1,y1,t)