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st: Re: How can I find the sum of specific values of a variable?
I assume that SIC is numberic, otherwise you can use substr function to
generate gsic, here is the code:
table gsic, c(sum gsic) replace name(newds)
Please note, the data set in memory will be replaced by the newds.
Hope it will be of help.
----- Original Message -----
From: "Delis, A." <email@example.com>
Sent: Thursday, November 20, 2003 4:39 PM
Subject: st: How can I find the sum of specific values of a variable?
> Dear Statalisters
> I have a dataset like the following, where the SIC values are in an
> SIC EXP
> 2011 667.8039
> 2013 130.8002
> 2095 38.90306
> 2098 0.617763
> 2111 249.92
> 2121 3.738577
> 2131 35.32281
> 2298 5.709858
> 2299 39.7519
> What I want to find is the sum of EXP values that have a SIC value
begining with 20, i.e. 667.8039+130.8002+..+38.90306+0.617763
> In others words I have some 4digit SIC data and I want to aggregate them
into 2digit SIC.
> Any hint is really appreciated
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