sum_um function

Sum of univariate (ARIMA) models

sum_um creates a univariate (ARIMA) model from the sum of serveral univariate (arima) models.

sum_um(...)

Arguments

• ...: List of "um" S3 objects.

Returns

A "um" S3 object.

Examples

um1 <- um(i = "(1 - B)", ma = "(1 - 0.8B)")
um2 <- um(i = "(1 - B12)", ma = "(1 - 0.8B^12)")
um3 <- sum_um(um1, um2)