Tim,
Have you considered appending the data set to itself 3 additional
times (to create 4 records for each row), sorting on the oldvar,
creating a multiplier based on _n, and then generating the newvar? I
hope I interpreted your question correctly.
use data;
append using data;
append using data;
append using data;
bysort oldvar: gen count=_n;
gen newvar=oldvar*count;
Best,
Bryce
On Sep 10, 2009, at 10:18 AM, Burnett, Tim wrote:
Hello,
I am at the end of my tether with Stata 10 and was hoping someone
could help me:
I have a dataset which I am trying to manipulate:
Assuming the following variable:
1
2
3
4
5
6
7
8
I am trying to create a variable which will show:
1*1
1*2
1*3
1*4
.
.
.
2*1
2*2
2*3
2*4
.
.
.
...and so on.
I really don't know where to look as I can't think what this
mathematical operation would be called. Maybe I'm just dim.
Many thanks,
Tim Burnett
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