When working with formulas one can use predefined functions listed in the table below:
| Name | Brief description |
| It models variable values using the Baxter-King filter. | |
| It models variable values using the Baxter-King filter. R is used for calculation. | |
| It smoothes variable using the Census1 method. | |
| It smoothes the variable using the Hodrick-Prescott filter (smoothing parameter is lambda). | |
| It smoothes the variable using the Hodrick-Prescott filter (smoothing parameter is a power). | |
| It smoothes the variable using the Hodrick-Prescott filter (smoothing parameter is a power). R is used for calculation. | |
| It models the variable using the LRX filter. | |
| It models the variable using the median smoothing. | |
| It models the variable using the median smoothing. R is used for calculation. | |
| It transforms the variable using the moving average method. | |
| It transforms the variable using the moving average method. R is used for calculation. | |
| It executes seasonal decomposition and adjustment of data. NOTE. The X11 method is supported only in Windows. |
See also: