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Re: st: sum over variables for determinate observations
From
Roberto Ferrer <[email protected]>
To
Stata Help <[email protected]>
Subject
Re: st: sum over variables for determinate observations
Date
Sun, 26 Jan 2014 13:13:02 -0430
You're right, -collapse- works:
*----------- begin code --------------
clear all
set more off
input ///
str20 provname provcode str2 lic str1 atecosec str1
atecosec2002 numcontrib
AGRIGENTO 84 AG A
A 100
AGRIGENTO 84 AG A
B 50
AGRIGENTO 84 AG B
C 12
AGRIGENTO 84 AG C
D 79
AGRIGENTO 84 AG O
P 34
AGRIGENTO 84 AG P
Q 0
AGRIGENTO 84 AG Z
Z 1
ALESSANDRIA 6 AL A
A 29
ALESSANDRIA 6 AL A
B 12
ALESSANDRIA 6 AL B
C 0
ALESSANDRIA 6 AL C
D 5
end
list, sepby(provname)
collapse (sum) numcontrib, by(provname atecosec)
list, sepby(provname)
*------------------- end code ------------------------
On Sun, Jan 26, 2014 at 11:06 AM, Marie-Luise Schmitz
<[email protected]> wrote:
> Dear Stata Users,
>
> I have a data set that looks like this:
>
> province_name province_code_107 license_number ateco_section ateco_section2002 numero_contribuenti...
> AGRIGENTO 84 AG A A 100
> AGRIGENTO 84 AG A B 50
> AGRIGENTO 84 AG B C 12
> AGRIGENTO 84 AG C D 79
> AGRIGENTO 84 AG O P 34
> AGRIGENTO 84 AG P Q 0
> AGRIGENTO 84 AG Z Z 1
> ALESSANDRIA 6 AL A A 29
> ALESSANDRIA 6 AL A B 12
> ALESSANDRIA 6 AL B C 0
> ALESSANDRIA 6 AL C D 5
>
> It contains numerous numeric variables following the variable numero_contribuenti.
> The variable ateco_section is a redefined version of the variable ateco_section2002 and shows sectors of economic activity. For instance, A = agriculture, B = fishery, etc.
> In the redefined variable ateco_section, sectors A and B are summarzied by A.
> However, the problem is that I want only one entry for sector A for each province that is, for numeric variables as numero_contribuenti I want the sum of previous A and B, hence:
>
> province_name province_code_107 license_number ateco_section numero_contribuenti .........
> AGRIGENTO 84 AG A 150
> AGRIGENTO 84 AG B 12
>
>
> I want to apply that to each province.
> I guess this problem may be solved with collapse (sum) but I am totally lost.
> Any help is highly appreciated.
>
> Marie-Luise
>
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