Stacked area plot

[Masoumeh Sanagou]

Hi Statalist,

I'm wondering if I could produce the attached graph (stacked area plot) using Stata?




I used

twoway area

and played with different options but I could not produce exactly the same graph.

Groups overlaid each other. Each category did not start from the end of previous category. (my graph)

[Andrew Musau]

The stack option is part of the graph command but you can be able to recreate a stacked area plot with twoway. However, you should communicate to your readers that the graphs are stacked (and not overlaid), otherwise the y-axis makes no sense. The trick is to create cumulative categories and plot the last category first. Here is an example

clear
set obs 16
set seed 1234
gen year= 1999+_n
forvalues i= 1/4{
gen CNTRY`i'= rnormal(10000, `i'500)
}

*GENERATE CUMULATIVE VALUES
gen _CNTRY1= CNTRY1

forvalues i= 2/4{
local j= `i'-1
gen _CNTRY`i'= _CNTRY`j' + CNTRY`i'
}

*REVERSE ORDER: PLOT LAST CUMULATIVE CATEGORY FIRST

twoway (area _CNTRY4 _CNTRY3 _CNTRY2 _CNTRY1 year, graphregion(color(white))///
yla(0(10000)50000) xlab(2000(5) 2015) color(gs4 gs8 gs12 gs 16))

[Masoumeh Sanagou]

graphs are attached here.