Carmen wrote:
I need to work with large datasets (>700M, <2g), but Stata 9.2 does not
allow me to set memory above 500M (my computer should allow for up to 2g
memory setting).
...
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Michael Blasnik gave some advice, including advice on how to reduce the
size of the dataset. This, however, requires the dataset to be opened
by Stata, and if the magnitude of the dataset forbids that, you have a
problem.
One possibility is to spit the dataset in parts, then make the reductions,
and finally combine the reduced datasets. I don't know if this could help
Carmen:
use "flyt.dta" in 1/1000000
compress
keep var1-var17
save flyt1.dta , replace
use "flyt.dta" in 1000001/2000000
compress
keep var1-var17
save flyt2.dta , replace
use "flyt.dta" in 2000001/l // l is lowercase L
compress
keep var1-var17
save flyt3.dta , replace
use flyt1.dta, clear
append using flyt2.dta
append using flyt3.dta
Svend
________________________________________________________
Svend Juul
Institut for Folkesundhed, Afdeling for Epidemiologi
(Institute of Public Health, Department of Epidemiology)
Vennelyst Boulevard 6
DK-8000 Aarhus C, Denmark
Phone, work: +45 8942 6090
Phone, home: +45 8693 7796
Fax: +45 8613 1580
E-mail: [email protected]
_________________________________________________________
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