How add line on graph

[Eva Smith]

How i can add line to separate predict.(last) month

[Clyde Schechter]

I think you just add -xline(td(1jan2016))- as an option on your -graph twoway line- command.

[Eva Smith]

if this code is working automaticaly , how work with line on last month ?

[Carole J. Wilson]

Do you want to automatically place a line that marks the beginning of the month prior to the current month (today is 29 March, so put a line at 1 Feb, 2016)?

Or, do you want to automatically place line that marks the beginning of the last month in your dataset (let's say your dataset runs from 1 Jan, 2000 to 31 Dec, 2002, then add a line at 1 Dec, 2002)?

Or do you want something else?

[Eva Smith]

Today is march, graphic predict next value on april, and i want to separate march and april, than april and may, etc.

graph twoway line expprice price date,tline(01mar2016)

[Carole J. Wilson]

Dear Eva, I'm sorry that I cannot understand what you would like here. I'm afraid that there is a bit of a language barrier. Perhaps you can find a friend or colleague to better explain your problem in English.

[Elias Ritter]

Hello
I've troubles with adding vertical lines in my twoway time series graph too.
On my y-axis there is the average TV-audience of 184 Champions League games and on the x-axis there is my time variable in terms of a clock time for example 21:30. The format of my time variable is %tcHH:MM and it's a double.

When i type in my code as follows (because there are multiple overlaid line graphs)

twoway (tsline avgrating_90 if group==1 & tin(20:45:00,22:33:00)) || (tsline avgrating_90 if group==2 & tin(20:45:00, 22:30:00)) || (tsline avgrating_90 if group==3 & tin(20:45:00, 22:30:00)) || (tsline avgrating_90 if group==4 & tin(20:45:00, 22:30:00)), tline( 21:30 21:45)

it results an error called: "invalid line argument, 21:30 21:45"

Help would be greatly appreciated
Kind regards
Elias

ps: There is suddenly a vertical line but in my stata graph there isn't one (probably because I transformed my stata graph into a PNG-file for attaching it here).