fix smooth trend

Author: guilhermebodin

Project.toml

@@ -1,7 +1,7 @@
 name = "StateSpaceModels"
 uuid = "99342f36-827c-5390-97c9-d7f9ee765c78"
 authors = ["raphaelsaavedra <[email protected]>, guilhermebodin <[email protected]>, mariohsouto"]
-version = "0.6.6"
+version = "0.6.7"
 
 [deps]
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"

src/models/unobserved_components.jl

@@ -461,7 +461,7 @@ function initial_hyperparameters!(model::UnobservedComponents)
     if model.has_irregular
         initial_hyperparameters["sigma2_irregular"] = observed_variance
     end
-    if model.has_trend
+    if model.stochastic_trend
         initial_hyperparameters["sigma2_trend"] = observed_variance
     end
     if model.has_cycle