The proposed solution works well if every observation is
exactly 4 digits, but if you have a variable whose length
varies and you really want the first 2 digits, try:
. gen byte x2 = real(substr(string(x1,"%12.0f"),1,2))
. li x1 x2, noo clean
x1 x2
12 12
1234 12
1234567 12
1234567890 12
If it is a string variable, you can:
. gen byte x2 = real(substr(x1,1,2))
-----Original Message-----
From: Hulley, Benjamin (NIH/NCI) [mailto:[email protected]]
Sent: Wednesday, September 08, 2004 4:45 PM
To: '[email protected]'
Subject: st: RE: Truncating data
Assuming x1 is numeric and all observations are 4 digits you could
gen x2 = int(x1/100)
-Ben
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