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| From | Michael Boehm <michael.boehm1@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Store datafile at minimum possible file size |
| Date | Fri, 16 Apr 2010 12:37:49 +0100 |
Dear Abdel, Martin and Nick, Thanks a lot. This is already very helpful! Michael On Fri, Apr 16, 2010 at 12:32 PM, Abdel Rahmen El Lahga <rahmen.lahga@gmail.com> wrote: > Thanks Martin and Nick. I have note any idea avout this command. > AbdelRahmen > > 2010/4/16 Nick Cox <n.j.cox@durham.ac.uk>: >> Note that Stata 11 has an embedded -zipfile- command. >> >> Nick >> n.j.cox@durham.ac.uk >> >> -----Original Message----- >> From: owner-statalist@hsphsun2.harvard.edu >> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Abdel Rahmen >> El Lahga >> Sent: 16 April 2010 12:16 >> To: statalist@hsphsun2.harvard.edu >> Subject: Re: st: Store datafile at minimum possible file size >> >> In my experience the best solution is to zip immediatlt the stata file >> without using ascci format. If we try >> ************ >> clear* >> set mem 2g >> set obs 10000000 >> gen str12 var1 ="abcdefghijkl" >> gen str14 var2 ="abcdefghijklmn" >> gen var3 =rnormal() >> gen var4 =runiform() >> compress >> qui save data_boehm , replace >> outfile using "ascii_boehm.raw", replace >> ls >> -rw-r--r-- 1 abdelrahmenlahga staff 550000000 Apr 16 12:05 >> ascii_boehm.raw >> -rw-r--r-- 1 abdelrahmenlahga staff 340000912 Apr 16 12:00 >> data_boehm.dta >> ********* >> As you can see the ascii file is much bigger than the Stata one. >> you can zip it to reduce the file zize to about 85m >> HTH >> AbdelRahmen >> >> 2010/4/16 Michael Boehm <michael.boehm1@gmail.com>: >>> Dear statalisters, >>> >>> I have a big datafile (2 string variables, 2 numeric one, 10million >>> observations) created in Stata and want to save it in the smallest >>> version possible. I have tried out the "outfile" command to write it >>> as an ASCII, but as far as I understand this doesn't give me the >>> smallest ASCII file possible. Can anyone help? >> >> * >> * For searches and help try: >> * http://www.stata.com/help.cgi?search >> * http://www.stata.com/support/statalist/faq >> * http://www.ats.ucla.edu/stat/stata/ >> > > > > -- > AbdelRahmen El Lahga > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/