title: Imputation of uni-variate, seasonal time series using linear model
body: <p>How can we perform imputation on uni-variate, seasonal time series using a linear model approach in R? It should account for seasonality and, preferably, trend.
  I have used <a href="https://www.rdocumentation.org/packages/forecast/versions/8.4/topics/tslm" rel="nofollow noreferrer">tslm</a> function for forecast but do not know a similar function for imputation.</p>