tsline command with confidence intervals

[Saravana Jaikumar]

Hi,

My STATA version is 13.
I have a variable named 'Average' over a period of time (time variable 'Month'). I also have standard errors associated with Average stored as variable 'se'.

Sample data:

Month  Average se
1may2013 16.4 .19
1jun2013 16.7 .18
1jul2013 15.8 .11
1aug2013 14.7 .10

I am trying to generate a tsline graph:

tsset Month
tsline Average, lc(black) tlabel(, format(%tdmy)) legend(off) tline(1jul2013, lc(black)) ytitle("Log(sales units)")

How do I add confidence intervals to this tsline plot (using the standard errors stored in se).
The area between the upper and lower limits need to be shaded.

I also have variables 'upper' and 'lower' generated using Average +/- 1.96*se

Please advice.

Thanks.

[Nick Cox]

help serrbar