Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsOutputView.cs
===================================================================
diff -u -r8f4f49daca3074460478b3236bde0511fb7fbe56 -r8a563ecfb400fafa392d2b849c597a99e3acac8c
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsOutputView.cs	(.../MacroStabilityInwardsOutputView.cs)	(revision 8f4f49daca3074460478b3236bde0511fb7fbe56)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsOutputView.cs	(.../MacroStabilityInwardsOutputView.cs)	(revision 8a563ecfb400fafa392d2b849c597a99e3acac8c)
@@ -32,6 +32,7 @@
     public partial class MacroStabilityInwardsOutputView : UserControl, IChartView
     {
         private readonly Observer outputObserver;
+        private readonly Observer inputObserver;
 
         private MacroStabilityInwardsCalculationScenario data;
 
@@ -43,6 +44,7 @@
             InitializeComponent();
 
             outputObserver = new Observer(UpdateChartData);
+            inputObserver = new Observer(UpdateChartData);
         }
 
         public object Data
@@ -56,6 +58,7 @@
                 data = value as MacroStabilityInwardsCalculationScenario;
 
                 outputObserver.Observable = data;
+                inputObserver.Observable = data?.InputParameters;
 
                 macroStabilityInwardsOutputChartControl.Data = data;
             }
@@ -72,6 +75,7 @@
         protected override void Dispose(bool disposing)
         {
             outputObserver.Dispose();
+            inputObserver.Dispose();
 
             if (disposing)
             {
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputViewTest.cs
===================================================================
diff -u -r187efa574b622ec8fd7d3f82f367974e17dbf138 -r8a563ecfb400fafa392d2b849c597a99e3acac8c
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputViewTest.cs	(.../MacroStabilityInwardsOutputViewTest.cs)	(revision 187efa574b622ec8fd7d3f82f367974e17dbf138)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsOutputViewTest.cs	(.../MacroStabilityInwardsOutputViewTest.cs)	(revision 8a563ecfb400fafa392d2b849c597a99e3acac8c)
@@ -221,6 +221,87 @@
             }
         }
 
+        [Test]
+        public void GivenViewWithOutputSet_WhenInputChangedAndObserversNotified_ThenChartDataUpdated()
+        {
+            // Given
+            using (var form = new Form())
+            using (var view = new MacroStabilityInwardsOutputView())
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                MacroStabilityInwardsOutputChartControl chartControl = GetChartControl(form);
+
+                MacroStabilityInwardsSurfaceLine surfaceLine = GetSurfaceLineWithGeometry();
+                MacroStabilityInwardsStochasticSoilProfile stochasticSoilProfile = GetStochasticSoilProfile2D();
+                var calculation = new MacroStabilityInwardsCalculationScenario
+                {
+                    InputParameters =
+                    {
+                        SurfaceLine = surfaceLine,
+                        StochasticSoilProfile = stochasticSoilProfile
+                    },
+                    Output = MacroStabilityInwardsOutputTestFactory.CreateOutput()
+                };
+
+                view.Data = calculation;
+
+                ChartDataCollection chartData = GetChartControl(chartControl).Data;
+
+                // Precondition
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertChartData(calculation, chartData);
+
+                // When
+                MacroStabilityInwardsStochasticSoilProfile newSoilProfile = GetStochasticSoilProfile2D();
+                calculation.InputParameters.StochasticSoilProfile = newSoilProfile;
+                calculation.InputParameters.NotifyObservers();
+
+                // Then
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertChartData(calculation, chartData);
+            }
+        }
+
+        [Test]
+        public void GivenViewWithoutOutputSet_WhenInputChangedAndObserversNotified_ThenChartDataUpdated()
+        {
+            // Given
+            using (var form = new Form())
+            using (var view = new MacroStabilityInwardsOutputView())
+            {
+                form.Controls.Add(view);
+                form.Show();
+
+                MacroStabilityInwardsOutputChartControl chartControl = GetChartControl(form);
+
+                MacroStabilityInwardsSurfaceLine surfaceLine = GetSurfaceLineWithGeometry();
+                MacroStabilityInwardsStochasticSoilProfile stochasticSoilProfile = GetStochasticSoilProfile2D();
+                var calculation = new MacroStabilityInwardsCalculationScenario
+                {
+                    InputParameters =
+                    {
+                        SurfaceLine = surfaceLine,
+                        StochasticSoilProfile = stochasticSoilProfile
+                    }
+                };
+
+                view.Data = calculation;
+
+                ChartDataCollection chartData = GetChartControl(chartControl).Data;
+
+                // Precondition
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertEmptyChartDataWithEmptySoilLayerAndEmptyWaternetChartData(chartData);
+
+                // When
+                MacroStabilityInwardsStochasticSoilProfile newSoilProfile = GetStochasticSoilProfile2D();
+                calculation.InputParameters.StochasticSoilProfile = newSoilProfile;
+                calculation.InputParameters.NotifyObservers();
+
+                // Then
+                MacroStabilityInwardsOutputViewChartDataAssert.AssertEmptyChartDataWithEmptySoilLayerAndEmptyWaternetChartData(chartData);
+            }
+        }
+
         private static MacroStabilityInwardsOutputChartControl GetChartControl(Form form)
         {
             return ControlTestHelper.GetControls<MacroStabilityInwardsOutputChartControl>(form, "macroStabilityInwardsOutputChartControl").Single();