Periodogram
===========

Visualize time series' cycles, seasonality, periodicity, and most significant periods.

**Inputs**

- Time series: Time series as output by [As Timeseries](as_timeseries.md) widget.

In this widget, you can visualize the most significant periods of the time series.

![](images/periodogram-stamped.png)

1. Select the series to calculate the periodogram for.
2. See the periods and their respective relative power spectral density estimates.

Periodogram for non-equispaced series is calculated using Lomb-Scargle method.

#### See also

[Correlogram](correlogram.md)
