Timeseries classical decomposition into trend, seasonal, and residual components

[Kedar Kelkar]

Hi,

I am trying to decompose my quarterly timeseries into the above mentioned components.

There was earlier a tsdecompose() as per some literature. However it seems to have been depreciated. I have been searching for an alternative, appreciate it anyone can help.

Thanks

[George Ford]

help ucm

[Kedar Kelkar]

Thanks George. I have tried this earlier. The difficulty is in creating separate variables, say cyclical, seasonal and irregular components and plotting them.

The documentation speaks of estimating the frequency and dampening effects of the cyclical components, and the recurring components of seasonal variation. But I need help with the estimation and plotting.

Thanks