From 567cd4bcc33a75c613b03d4686d1a0ef478e69e3 Mon Sep 17 00:00:00 2001
From: Antoine Carme <antoine.carme@laposte.net>
Date: Sat, 5 Mar 2022 17:21:12 +0100
Subject: [PATCH] Add Multiplicative Models/Seasonals #178. Updated Optons.
 Only additive models are activated by default

---
 pyaf/TS/Options.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/pyaf/TS/Options.py b/pyaf/TS/Options.py
index cdc00036d..735f86b5b 100644
--- a/pyaf/TS/Options.py
+++ b/pyaf/TS/Options.py
@@ -15,6 +15,9 @@ def __init__(self):
         self.mActivePeriodics = {};
         self.mActiveTrends = {};
         self.mActiveAutoRegressions = {};
+        #  Add Multiplicative Models/Seasonals #178 
+        self.mActiveDecompositionTypes = {}
+        self.mKnownDecompositionTypes = ['T+S+R', 'TS+R', 'TSR']
         self.mKnownTransformations = ['None', 'Difference', 'RelativeDifference',
                                       'Integration', 'BoxCox',
                                       'Quantization', 'Logit',
@@ -50,7 +53,21 @@ def __init__(self):
         self.set_active_trends(self.mKnownTrends[0:4]);
         self.set_active_periodics(self.mKnownPeriodics);
         self.set_active_autoregressions(self.mKnownAutoRegressions[0:3]);
+        # Add Multiplicative Models/Seasonals #178.
+        # Only additive models are activated by default        
+        self.set_active_decopomposition_types(['T+S+R']);
         
+    def set_active_decopomposition_types(self, iDecompTypes):
+        self.mActiveDecompositionTypes = {};
+        for decomp_type in self.mKnownDecompositionTypes:
+            if(decomp_type in iDecompTypes):
+                self.mActiveDecompositionTypes[decomp_type] = True;
+            else:
+                self.mActiveDecompositionTypes[decomp_type] = False;
+        if(True not in self.mActiveDecompositionTypes.values()):
+            # default
+            self.mActiveTransformations['T+S+R'] = True;
+            
     def set_active_transformations(self, transformations):
         self.mActiveTransformations = {};
         for transformation in self.mKnownTransformations: