My diagnosis resembles David's. It seems you need a restructure first.
Another way to do it:
preserve
collapse X1-X7, by(wave)
reshape long X, i(wave)
separate X, by(wave)
graph bar X?, over(_j)
restore
Nick
[email protected]
David Airey
One solution is to reshape your data so you have wave and time as
variables.
For example,
clear
set obs 70
egen panel = seq(), from(1) to(2) block(35)
gen id = _n
forvalues i = 1/7 {
gen x`i' = invnorm(uniform()) + panel
}
reshape long x, i(id) j(time)
graph bar x, over(panel) over(time)
If you just wanted the x1-x7 labeled, you would need to have your data
organized into two responses by panel, e.g., panel1 and panel2, and
then issue
graph bar panel1 panel2, over(time)
On Apr 6, 2008, at 10:55 PM, Lloyd Dumont wrote:
> I'm having trouble doing what ought
> to be a simple bar graph. I have panel data that
> includes some variables along the lines of...
>
> X1 X2 ... X7
>
> I am interested in their means by survey wave for each
> of two waves. But, in terms of groupings...
> I would like there two be 7 groups, each containing
> two bars--one for wave I and one for wave II.
>
> No matter what I do, it seems to want to create 2
> groups of 7 bars each--the oppposite of what I want.
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