Added little safety feature for debugging.

Source/ImmersiveAnalytics/Plot3D.cpp

@@ -37,15 +37,11 @@ void APlot3D::InitPoints()
 {
 	UHDF5Library::ImportData(FileName, X, Y, Z, U, V, W);
 
-	int32 Num;
-	if (OverridePointCount)
+	int32 Num = X.Num();
+	if (OverridePointCount && PointCount <= Num)
 	{
 		Num = PointCount;
 	}
-	else
-	{
-		Num = X.Num();
-	}
 
 	IsBrushed = TArray<bool>();
 	IsBrushed.Init(false, Num);