Index: Core/Components/src/Core.Components.Stack/Data/StackChartData.cs
===================================================================
diff -u -rf84603903b35f1b130fc86de39dbb8fb8120ac05 -r36c2565cd9f0aa5ba04b2e15f7857dd0c836544e
--- Core/Components/src/Core.Components.Stack/Data/StackChartData.cs	(.../StackChartData.cs)	(revision f84603903b35f1b130fc86de39dbb8fb8120ac05)
+++ Core/Components/src/Core.Components.Stack/Data/StackChartData.cs	(.../StackChartData.cs)	(revision 36c2565cd9f0aa5ba04b2e15f7857dd0c836544e)
@@ -138,5 +138,14 @@
 
             rows.Add(new RowChartData(name, values, color));
         }
+
+        /// <summary>
+        /// Clears the rows and columns of the <see cref="StackChartData"/>.
+        /// </summary>
+        public void Clear()
+        {
+            columns.Clear();
+            rows.Clear();
+        }
     }
 }
\ No newline at end of file
Index: Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs
===================================================================
diff -u -rf84603903b35f1b130fc86de39dbb8fb8120ac05 -r36c2565cd9f0aa5ba04b2e15f7857dd0c836544e
--- Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs	(.../StackChartDataTest.cs)	(revision f84603903b35f1b130fc86de39dbb8fb8120ac05)
+++ Core/Components/test/Core.Components.Stack.Test/Data/StackChartDataTest.cs	(.../StackChartDataTest.cs)	(revision 36c2565cd9f0aa5ba04b2e15f7857dd0c836544e)
@@ -275,5 +275,33 @@
             CollectionAssert.AreEqual(values, row.Values);
             Assert.IsNull(row.Color);
         }
+
+        [Test]
+        public void Clear_Always_ClearsAllColumnsAndRows()
+        {
+            // Setup
+            var data = new StackChartData();
+            data.AddColumn("Column 1");
+            data.AddRow("Row 1", new List<double>
+            {
+                1.0
+            });
+            
+            data.AddColumnWithValues("Column 2", new List<double>
+            {
+                2.0
+            });
+
+            // Precondition
+            Assert.AreEqual(2, data.Columns.Count());
+            Assert.AreEqual(1, data.Rows.Count());
+
+            // Call
+            data.Clear();
+
+            // Assert
+            CollectionAssert.IsEmpty(data.Columns);
+            CollectionAssert.IsEmpty(data.Rows);
+        }
     }
 }
\ No newline at end of file