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# Re: st: Stacked and Unstacked Variables in Graph Bar

 From Nick Cox To "statalist@hsphsun2.harvard.edu" Subject Re: st: Stacked and Unstacked Variables in Graph Bar Date Fri, 19 Apr 2013 19:37:08 +0100

```Some technique here:

* sandpit to play in
clear
set obs 10
gen year = 2010 + (_n > 5)
foreach v in a b c {
gen `v' = ceil(6 * runiform())
}

* restructure!
stack a year b year c year , into(all year) clear
label define _stack 1 a 2 b 3 c
label val _stack _stack
gen which = _stack > 2
graph bar (sum) all,  over(_stack) over(which, label(nolabels))
over(year)  nofill asyvars

Nick
njcoxstata@gmail.com

On 19 April 2013 19:16, Hendrik Worschech <hendrik.worschech@gmail.com> wrote:

> I have a panel with, lets say, 10 individuals over 5 years and three
> variables (a, b & c).
>
> I would like to have the sum (of all individuals) of a & b stacked
> together as one bar and the sum of c by itself next to it. And this
> should be repeated for each year.
>
> I've come across this example, but in my case I don't want to separate
> by observations but by variables. I don't know how I could separate
> the variables a&b from c with over:
>
> webuse union, clear
> keep idcode year age
> gen which = cond(year == 71 | year == 77, 1, cond(year == 88, 2, .))
> graph bar age, over(year) over(which) asyvars stack
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```