twoway area and unwanted outline

[Brendan Halpin]

I use twoway area to draw chronograms, and like to suppress the outline of the area, using fill-colour only. However, in interactive mode, Stata puts a black outline around the last category. This does not happen when exported to PDF or EPS, but it is reproduced in export to PNG:



The desired output is as follows (achieved via export to PDF):

The graphics command is as follows (full example below):

twoway area xx* t, lwidth(none none none none)

The lwidth() option suppresses the outline of each colour area.

MWE:

set obs 1000
gen x = runiformint(1,4)
gen t = 1 + int((_n-1)/10)
tab x, gen(xx)
collapse (sum) xx*, by(t)

replace xx3 = xx3 + xx4
replace xx2 = xx2 + xx3
replace xx1 = xx1 + xx2

twoway area xx* t, lwidth(none none none none)

[Liu Qiang]

quite strange. In my case, it won't appear.Here is the png directly exported from Stata.

[Brendan Halpin]

Interesting.

Maybe this is specific to my setup: Linux, Stata 15.1.

This code gives me a PNG with the black outline, and a PDF without, in interactive graphical Stata:

twoway area xx* t, lwidth(none none none none)
graph export areatest.png, replace
graph export areatest.pdf, replace

(In batch or console Stata, graph export areatest.png gives a "translator Graph2png not found" error.)

[Brendan Halpin]

OK, false alarm: an update all solved the problem. Thanks Liu, for the feedback.