Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsOutputContextTreeNodeInfoTest.cs
===================================================================
diff -u -r1ba3eebbfe2ac3df531f67700f8f787302d8582c -r2ce31f95c63ed49dff8df2d2fdc03960ed20c9df
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsOutputContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsOutputContextTreeNodeInfoTest.cs)	(revision 1ba3eebbfe2ac3df531f67700f8f787302d8582c)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsOutputContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsOutputContextTreeNodeInfoTest.cs)	(revision 2ce31f95c63ed49dff8df2d2fdc03960ed20c9df)
@@ -99,7 +99,7 @@
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
 
             // Call
-            Color color = info.ForeColor(new GrassCoverErosionInwardsOutputContext(new GrassCoverErosionInwardsCalculation(),
+            Color color = info.ForeColor(new GrassCoverErosionInwardsOutputContext(new GrassCoverErosionInwardsCalculation(double.NaN),
                                                                                    failureMechanism,
                                                                                    assessmentSection));
 
@@ -119,7 +119,7 @@
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
 
             // Call
-            Color color = info.ForeColor(new GrassCoverErosionInwardsOutputContext(new GrassCoverErosionInwardsCalculation
+            Color color = info.ForeColor(new GrassCoverErosionInwardsOutputContext(new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new TestGrassCoverErosionInwardsOutput()
             }, failureMechanism, assessmentSection));
@@ -151,7 +151,7 @@
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
 
-            var grassCoverErosionInwardsCalculation = new GrassCoverErosionInwardsCalculation
+            var grassCoverErosionInwardsCalculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = hasOutput ? new TestGrassCoverErosionInwardsOutput() : null
             };
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingOutputContextTreeNodeInfoTest.cs
===================================================================
diff -u -r1ba3eebbfe2ac3df531f67700f8f787302d8582c -r2ce31f95c63ed49dff8df2d2fdc03960ed20c9df
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingOutputContextTreeNodeInfoTest.cs	(.../OvertoppingOutputContextTreeNodeInfoTest.cs)	(revision 1ba3eebbfe2ac3df531f67700f8f787302d8582c)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingOutputContextTreeNodeInfoTest.cs	(.../OvertoppingOutputContextTreeNodeInfoTest.cs)	(revision 2ce31f95c63ed49dff8df2d2fdc03960ed20c9df)
@@ -105,7 +105,7 @@
             mocks.ReplayAll();
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
 
             // Call
             Color color = info.ForeColor(new OvertoppingOutputContext(calculation, failureMechanism, assessmentSection));
@@ -122,7 +122,7 @@
             mocks.ReplayAll();
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new GrassCoverErosionInwardsOutput(
                     new TestOvertoppingOutput(0.5),
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingRateOutputContextTreeNodeInfoTest.cs
===================================================================
diff -u -r1ba3eebbfe2ac3df531f67700f8f787302d8582c -r2ce31f95c63ed49dff8df2d2fdc03960ed20c9df
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingRateOutputContextTreeNodeInfoTest.cs	(.../OvertoppingRateOutputContextTreeNodeInfoTest.cs)	(revision 1ba3eebbfe2ac3df531f67700f8f787302d8582c)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/OvertoppingRateOutputContextTreeNodeInfoTest.cs	(.../OvertoppingRateOutputContextTreeNodeInfoTest.cs)	(revision 2ce31f95c63ed49dff8df2d2fdc03960ed20c9df)
@@ -100,7 +100,7 @@
         public void ForeColor_HasNoOutput_ReturnGrayText()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new GrassCoverErosionInwardsOutput(
                     new TestOvertoppingOutput(0.5),
@@ -119,7 +119,7 @@
         public void ForeColor_HasOutput_ReturnControlText()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN)
             {
                 Output = new GrassCoverErosionInwardsOutput(
                     new TestOvertoppingOutput(0.5),
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/UpdateInfos/DikeProfilesContextUpdateInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -r2ce31f95c63ed49dff8df2d2fdc03960ed20c9df
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/UpdateInfos/DikeProfilesContextUpdateInfoTest.cs	(.../DikeProfilesContextUpdateInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/UpdateInfos/DikeProfilesContextUpdateInfoTest.cs	(.../DikeProfilesContextUpdateInfoTest.cs)	(revision 2ce31f95c63ed49dff8df2d2fdc03960ed20c9df)
@@ -182,7 +182,7 @@
                 plugin.Gui = gui;
 
                 var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
-                failureMechanism.CalculationsGroup.Children.Add(new GrassCoverErosionInwardsCalculation());
+                failureMechanism.CalculationsGroup.Children.Add(new GrassCoverErosionInwardsCalculation(double.NaN));
 
                 var dikeProfiles = new DikeProfileCollection();
                 var context = new DikeProfilesContext(dikeProfiles, failureMechanism, assessmentSection);
@@ -217,7 +217,7 @@
                 plugin.Gui = gui;
 
                 var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
-                failureMechanism.CalculationsGroup.Children.Add(new GrassCoverErosionInwardsCalculation
+                failureMechanism.CalculationsGroup.Children.Add(new GrassCoverErosionInwardsCalculation(double.NaN)
                 {
                     Output = new TestGrassCoverErosionInwardsOutput()
                 });
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsInputViewInfoTest.cs
===================================================================
diff -u -r2503894f449e6a2d24fe0cf15ff1d8a6cd831a3c -r2ce31f95c63ed49dff8df2d2fdc03960ed20c9df
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsInputViewInfoTest.cs	(.../GrassCoverErosionInwardsInputViewInfoTest.cs)	(revision 2503894f449e6a2d24fe0cf15ff1d8a6cd831a3c)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/ViewInfos/GrassCoverErosionInwardsInputViewInfoTest.cs	(.../GrassCoverErosionInwardsInputViewInfoTest.cs)	(revision 2ce31f95c63ed49dff8df2d2fdc03960ed20c9df)
@@ -80,8 +80,8 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var input = new GrassCoverErosionInwardsInput();
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var input = new GrassCoverErosionInwardsInput(double.NaN);
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var context = new GrassCoverErosionInwardsInputContext(input,
                                                                    calculation,
                                                                    new GrassCoverErosionInwardsFailureMechanism(),
@@ -101,7 +101,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario();
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
             var calculationContext = new GrassCoverErosionInwardsCalculationScenarioContext(calculation,
                                                                                             new CalculationGroup(),
                                                                                             new GrassCoverErosionInwardsFailureMechanism(),
@@ -128,8 +128,8 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculationScenario();
-            var calculationToRemove = new GrassCoverErosionInwardsCalculationScenario();
+            var calculation = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
+            var calculationToRemove = new GrassCoverErosionInwardsCalculationScenario(double.NaN);
 
             var calculationContext = new GrassCoverErosionInwardsCalculationScenarioContext(calculationToRemove,
                                                                                             new CalculationGroup(),
@@ -157,7 +157,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -186,7 +186,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -215,7 +215,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             var nestedGroup = new CalculationGroup();
             nestedGroup.Children.Add(calculation);
@@ -246,7 +246,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             var nestedGroup = new CalculationGroup();
             nestedGroup.Children.Add(calculation);
@@ -277,7 +277,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
             failureMechanism.CalculationsGroup.Children.Add(calculation);
 
@@ -304,7 +304,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
             failureMechanism.CalculationsGroup.Children.Add(calculation);
 
@@ -331,7 +331,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -361,7 +361,7 @@
             var assessmentSection = mocks.Stub<IAssessmentSection>();
             mocks.ReplayAll();
 
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -388,7 +388,7 @@
         public void CloseForData_ViewCorrespondingToRemovedAssessmentSection_ReturnsTrue()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
             failureMechanism.CalculationsGroup.Children.Add(calculation);
 
@@ -418,7 +418,7 @@
         public void CloseForData_ViewNotCorrespondingToRemovedAssessmentSection_ReturnsFalse()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
             failureMechanism.CalculationsGroup.Children.Add(calculation);
 
@@ -432,7 +432,7 @@
 
             using (var view = new GrassCoverErosionInwardsInputView
             {
-                Data = new GrassCoverErosionInwardsCalculation()
+                Data = new GrassCoverErosionInwardsCalculation(double.NaN)
             })
             {
                 // Call
@@ -448,7 +448,7 @@
         public void CloseForData_NestedViewCorrespondingToRemovedAssessmentSection_ReturnsTrue()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -481,7 +481,7 @@
         public void CloseForData_NestedViewNotCorrespondingToRemovedAssessmentSection_ReturnsFalse()
         {
             // Setup
-            var calculation = new GrassCoverErosionInwardsCalculation();
+            var calculation = new GrassCoverErosionInwardsCalculation(double.NaN);
             var calculationGroup = new CalculationGroup();
             calculationGroup.Children.Add(calculation);
 
@@ -498,7 +498,7 @@
 
             using (var view = new GrassCoverErosionInwardsInputView
             {
-                Data = new GrassCoverErosionInwardsCalculation()
+                Data = new GrassCoverErosionInwardsCalculation(double.NaN)
             })
             {
                 // Call