Shaded graph

[Jonathan Vasilieri]

Dear all,

I was wondering if anyone could point me in the right direction on how to produce a shaded graph in Stata.

Let's say I have data on the prices of 3 products over an 8-year period (annual price observations) and I'd like to plot the price trends.

graph twoway (line prod1 prod2 prod3 year, clcolor(blue red green)), ///
xlabel(2009(2)2016) xtitle("") legend( symys(*.5) symxs(*.5) size(3) region(c(none)) ///
bm(tiny) rows(1) order(1 "Product 1" 2 "Product 2" 3 "Product 3") )
graph display, scheme(sj)

I'd like to produce a shaded figure where the the background is shown in white for 0-100, in light gray for 101-150, and slightly darker gray for 151+.

Is this possible to accomplish?

Thank you very much.

[Nick Cox]

I think you may need to use something like twoway rarea to lay down different shadings first, then plot your data on top. Generic advice within https://www.stata-journal.com/articl...article=gr0067

gr0067 is thereby revealed as an otherwise unpredictable search term for related posts in this forum. (Perhaps the leading empirical example is shading recession periods on time series plots.)

[Joro Kolev]

You might also have a look at this Stata tip:

https://www.stata-journal.com/sjpdf....iclenum=gr0050

The authors show how to construct "confidence shades". I guess you can adapt the code there for your purpose.