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st: looping and replacing values

From   Buzz Burhans <>
Subject   st: looping and replacing values
Date   Fri, 01 Aug 2003 16:00:20 -0400

I wonder if someone could help me with the syntax below.

I have panel data, long form, which has variables where only one observation contains a value within each panel, and the other observations for that panel and variable are missing

I would like to loop over the panels and the variables and replace the missings for each panel/variable with the single existing observation for that panel that has a value. I used min, but it doesnt really matter if it is min etc, as there is only one value extant for each panel.

There are however, a lot more variables than I show here, and I am quite unsuccesful at making the foreach loops work right.

My attempts look like this, and I would appreciate any help.


local Varts "CostCowM7toM12 CostCowQtr CostCWTYrly CostCWTM1toM6 CostCWTM7toM12 CostCWTQtr "
tokenize `Varts'
levels farmid, local(levels)
foreach l of local levels {

syntax [varlist]
foreach var of local Varts{
replace `var' = min(`var')


Buzz Burhans

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