# Time Series

These are the available functions for time series. See each function's help topic in the TERR Language Reference for more information.

Function name | Title description
--- | ---
`acf` | Auto- and Cross- Covariance or Correlation Estimation
`aggregate` | Compute Summary Statistics of Subsets of Data
`aggregate.default` | Compute Summary Statistics of Subsets of Data
`aggregate.formula` | Compute Summary Statistics of Subsets of Data
`aggregate.ts` | Compute Summary Statistics of Subsets of Data
`ar` | Fit Autoregressive Models to Time Series
`ar.yw` | Fit Autoregressive Models to Time Series
`arima` | ARIMA modeling of Time Series
`arima.sim` | Simulate a Univariate ARIMA Series
`as.ts` | Time Series Objects
`Box.test` | Box-Pierce and Ljung-Box Tests
`cbind.ts` | Union and Intersection of Time Series
`ccf` | Auto- and Cross- Covariance or Correlation Estimation
`coef.Arima2` | ARIMA modeling of Time Series
`cycle` | Create Time Vector or Index of Frequency
`cycle.default` | Create Time Vector or Index of Frequency
`decompose` | Classical Seasonal Decomposition by Moving Averages
`diff` | Create an Object of Differences
`diff.Date` | Create an Object of Differences
`diff.default` | Create an Object of Differences
`diff.POSIXt` | Create an Object of Differences
`diff.ts` | Create an Object of Differences
`diffinv` | Discrete Integration: inverse of diff
`diffinv.default` | Discrete Integration: inverse of diff
`diffinv.ts` | Discrete Integration: inverse of diff
`fft` | Fast Fourier Transform
`filter` | Apply a Filter to a Time Series
`HoltWinters` | Holt-Winters Filtering
`is.mts` | Time Series Objects
`is.ts` | Time Series Objects
`lag` | Create a Lagged Time Series
`mvfft` | Fast Fourier Transform
`na.contiguous` | Find Longest Contiguous Stretch of non-NAs
`na.contiguous.default` | Find Longest Contiguous Stretch of non-NAs
`na.contiguous.ts` | Find Longest Contiguous Stretch of non-NAs
`pacf` | Auto- and Cross- Covariance or Correlation Estimation
`predict.ar` | Fit Autoregressive Models to Time Series
`predict.HoltWinters` | Holt-Winters Filtering
`print.ar` | Fit Autoregressive Models to Time Series
`print.Arima2` | ARIMA modeling of Time Series
`print.HoltWinters` | Holt-Winters Filtering
`print.ts` | Print a Time Series
`residuals.HoltWinters` | Holt-Winters Filtering
`time` | Create Time Vector or Index of Frequency
`time.default` | Create Time Vector or Index of Frequency
`ts` | Time Series Objects
`ts.intersect` | Union and Intersection of Time Series
`ts.union` | Union and Intersection of Time Series
`vcov.Arima2` | ARIMA modeling of Time Series
`window` | Window a Time Series
`window.default` | Window a Time Series
`window.ts` | Window a Time Series
`window<-` | Window a Time Series
`window<-.ts` | Window a Time Series