Date:         Tue, 8 Jun 2010 15:13:40 -0400
Reply-To:     Randy <randistan69@HOTMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Randy <randistan69@HOTMAIL.COM>
Subject:      Filling in Missing Observations

Dear All:
  My Data Set is as follows:

ID1  ID2   VarA
A     1    29
A     1    26
A     1    23
A     1    25
A     1     .
A     1     .
A     1     0
A     1     .
A     2     45
A     2     .
A     2     .
A     2     23
A     2     0
A     2     .
B     1     87
B     1     16
B     1     23
B     1     .
B     1     0
B     1     .

I want to construct a VARB such that the Missing Observations are filled by
the previous observation that is an integer.  So:

ID1  ID2   VarA   VarB
A     1    29      29
A     1    26      26
A     1    23      23
A     1    25      25
A     1     .      25
A     1     .      25
A     1     0       0
A     1     .       0
A     2     45      45
A     2     .       45
A     2     .       45
A     2     23      23
A     2     0       0
A     2     .       0
B     1     87      87
B     1     16      16
B     1     23      23
B     1     .       23
B     1     0       0
B     1     .       0