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st: Preserve and restore within a foreach loop
From
Florian Seliger <[email protected]>
To
[email protected]
Subject
st: Preserve and restore within a foreach loop
Date
Wed, 22 Dec 2010 15:07:53 -0700
Dear Statalist,
I want to restore a big dataset at the end of each iteration in order to save time ( I don't want to reload the 2,5GB file after each iteration), e.g.
use big_dataset.dta, clear
preserve
foreach file in ... {
joinby pat_var using "`file'"
drop pat_var
...
save changed_"`file'", replace
restore, preserve
}
******
The last command is intended to restore the big_dataset that should be matched with each file specified in the loop. Unfortunately, STATA interrupts the process and tells me that it does not find the variable pat_var.
Hence, the command might not work as intended, but I don't know where I have made a mistake.
Do you have any suggestions?
Thank you,
Florian
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