st: Replacing observations with values from other observations

["Pounds, Moses A." <MAPounds@bcps.k12.md.us>]

Hello everyone,

I would like to replace specific observations with values from other observations. I can use 

replace var1 = 500 if obsID==5

to replace the value for variable 1 in the observation with ID number 5, with the quantity 500. What I would like is code that allows me to make a reference to another observation, in place of that "500." Does anyone have a way to do this? (My option of last resort is to do this in Excel, but I would prefer to keep working in Stata.)

Thanks in advance for any help you can give,
Moses

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Moses A. Pounds
Program Evaluator
Baltimore City Public Schools
Office of Achievement and Accountability

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