Plotting confidence intervals for simple exponential smoothing forecast results

[Andrey Piratenko]

Hello, everyone!

I am currently trying to visualise the results of a simple exponential smoothing forecast.

Plotting a simple time series line graph is not a problem.

But how can I draw confidence intervals like the one on the picture below:

Any help will be much appreciated!

[Andrey Piratenko]

My STATA version is 14.2, by the way.