How to add a line to a stacked bar graph?

[Marcos Perez]

I have a stacked bar graph of 2 variables over years. I want to add a line for year information of another varaible (or another stacked bar of 2 varaibles over years if possible)

My current code :

graph bar (asis) full_puty full_cally if dec2==10, over(year, label(labsize(vsmall))) stack bar(1, fcolor(gs8) lcolor(black)) bar(2, fcolor(gs14) lcolor(black)) title(Proportion of contracts in Top IS Decile) legend(order(1 "Put" 2 "Call" ))

[Nick Cox]

Adding a line could mean one of adding

1 a constant

2 a straight line with specified slope

3 a series shown by a segment line.

If it's either #2 or #3 you probably need to switch to twoway bar etc.

That said, what I see in your graph is that the proportion of Put varies a bit around 0.6 and that the proportion of Call correspondingly varies a bit around 0.4. I would choose the more interesting or important of the two and use a line or dot chart to show the variations more directly.

[Marcos Perez]

Sorry for not being clear. Forget about the line, what about if I want to add another stacked bar for each year that includes de information of other two varaibles, let say full_XXX full_YYY

[Marcos Perez]

Basically combining these two plots, where the bars for each year are together

[Nick Cox]

Another stacked bar chart is to be produced in the same way, I guess. You don't show a data example, so the code can only be guessed at as being similar.