Shaded bar between values of X axis of a line graph

[Kedar Kelkar]

Hi,

I am making a line graph where x axis is the year. I want to highlight/shade the periods between 2007-2009 and 2016-2018 respectively. I used the area in twoway line graph but it shades only the area under the line. How can I highlight years?

My code:

twoway (line unique year, by(type) xline(2007 2009 2016 2018)) ///
(area unique year if year>=2007 & year<=2009 & year>=2016 & year<=2018)

Thanks

I found one reference image online:

[Nick Cox]

Your condition

 
 year>=2007 & year<=2009 & year>=2016 & year<=2018

is never going be to satisfied as no year in 2007, 2008, 2009 is ever equal to any of 2016, 2017, 2018, and vice versa.

I think you need

 
 (year>=2007 & year<=2009) |  (year>=2016 & year<=2018)

and I suggest that

inrange(year, 2007, 2009) | inrange(year, 2016, 2018)

is easier to work with.