From a9ffbf5299c36f8a8e92d2335ed8e6f73fc30b12 Mon Sep 17 00:00:00 2001
From: Varun Agrawal <varagrawal@gmail.com>
Date: Tue, 8 Oct 2024 15:09:21 -0400
Subject: [PATCH] new AlgebraicDecisionTree constructor

---
 gtsam/discrete/AlgebraicDecisionTree.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/gtsam/discrete/AlgebraicDecisionTree.h b/gtsam/discrete/AlgebraicDecisionTree.h
index 6001b1983..45b949d3c 100644
--- a/gtsam/discrete/AlgebraicDecisionTree.h
+++ b/gtsam/discrete/AlgebraicDecisionTree.h
@@ -182,6 +182,21 @@ namespace gtsam {
       this->root_ = DecisionTree<L, double>::convertFrom(other.root_, L_of_M, op);
     }
 
+    /**
+     * @brief Create from an arbitrary DecisionTree<L, X> by operating on it
+     * with a functional `f`.
+     *
+     * @tparam X The type of the leaf of the original DecisionTree
+     * @tparam Func Type signature of functional `f`.
+     * @param other The original DecisionTree from which the
+     * AlgbraicDecisionTree is constructed.
+     * @param f Functional used to operate on
+     * the leaves of the input DecisionTree.
+     */
+    template <typename X, typename Func>
+    AlgebraicDecisionTree(const DecisionTree<L, X>& other, Func f)
+        : Base(other, f) {}
+
     /** sum */
     AlgebraicDecisionTree operator+(const AlgebraicDecisionTree& g) const {
       return this->apply(g, &Ring::add);