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st: Using values in an variable to save parts of an dataset


From   Andreas Dall Frøseth <[email protected]>
To   "[email protected]" <[email protected]>
Subject   st: Using values in an variable to save parts of an dataset
Date   Tue, 30 Apr 2013 14:33:32 +0000

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
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