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From | Sergiy Radyakin <serjradyakin@gmail.com> |
To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
Subject | Re: st: Using values in an variable to save parts of an dataset |
Date | Tue, 30 Apr 2013 10:42:51 -0400 |
note you need to preserve/restore the data in the loop and be more careful with locals vs variables. sysuse auto, clear levelsof foreign, local(levs) foreach lev in `levs' { preserve keep if foreign==`lev' save c:\temp\auto_`lev' restore } Best, Sergiy On Tue, Apr 30, 2013 at 10:33 AM, Andreas Dall Frøseth <Andreas.Froseth@stud.nhh.no> wrote: > Dear all. > > I'm trying to divide my dataset into pieces based on the values in an variable. My set is an large panel data, containing a number of companies. Each company has a value in the variable "industryid", which allows me to identify what industry it operates in. > I am now trying to divide this large dataset into smaller sets for each single industry. > > The reason why I'm struggling is that I wish to apply this separation for a number of different sets, which might contain a different amount of industries, without having to identify the values in the industry-variable myself. > I have tried to make a macro with the values using the "levelsof" command, and then apply it with: > > foreach industryid in `industryids' { > keep if industryid==`industryids' > save industry_`industryids' > } > > > But this runs back as "invalid '10'". > > Any suggestions on how to do this? > Forgive me if this is way to basic... > > Your feedback will be appreciated. > > -Andreas > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/