Add to a time_series_model object

Combines time_series_model and/or sum_model into a sum_model.

# S3 method for class 'time_series_model'
e1 + e2

Arguments

e1

Left operand.

e2

Right operand.

Value

A sum_model.

Examples

m1 <- wn(sigma2 = 1)
m2 <- ar1(phi = 0.8, sigma2 = 0.5)
model <- m1 + m2
model
#> Stochastic model: sum of 2 processes
#> 
#>  [1] White Noise
#>      Parameters : sigma2 =     1 
#> 
#>  [2] AR(1)
#>      Parameters : phi =   0.8, sigma2 =   0.5 
#>