How to specify minimum or maximum possible values in a forecast?
<p>Is there a way to specify minimum or maximum possible values in a forecast done with ETS/ARIMA models?</p>

<p>Such as when forecasting a trend in % that can only go between 0% and 100%.</p>

<p>I am using R package <code>forecast</code> (and function <code>forecast</code>).</p>