/// <summary>
/// http://www.deptofnumbers.com/rent/us/
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static Pecuniam GetAvgAmericanRentByYear(DateTime? dt)
{
var eq = new LinearEquation {Intercept = -13340, Slope = 7.1091};
var year = dt.GetValueOrDefault(DateTime.Today).ToDouble();
return new Pecuniam( (decimal)eq.SolveForY(year));
}
public void TestLinearEquation()
{
//y = 0.1056x - 181.45
var myEq = new LinearEquation {Intercept = -181.45, Slope = 0.1056};
var dob = 1974.477451;
var x = myEq.SolveForY(dob);
System.Diagnostics.Debug.WriteLine(x);
Assert.IsTrue(x > 27 && x < 28);
var y = myEq.SolveForX(27.0548188256);
System.Diagnostics.Debug.WriteLine(y);
Assert.AreEqual(dob, y);
}
/// <summary>
/// Returns a new <see cref="IPerson"/> representing a
/// parent of the specified <see cref="gender"/> having a realistic age
/// from the <see cref="childDob"/>.
/// </summary>
/// <param name="childDob"></param>
/// <param name="eq"></param>
/// <param name="gender"></param>
/// <returns></returns>
public static IPerson SolveForParent(DateTime childDob, LinearEquation eq, Gender gender)
{
//move to a date 1 - 6 years prior the Person's dob
var dtPm = childDob.AddYears(-1 * Etx.IntNumber(1, 6)).AddDays(Etx.IntNumber(1, 360));
//calc the age of marriable person at this time
var avgAgeCouldMarry =
eq.SolveForY(dtPm.ToDouble());
//move the adjusted child-dob date back by calc'ed years
var parentDob = dtPm.AddYears(Convert.ToInt32(Math.Round(avgAgeCouldMarry, 0))*-1);
var aParent = new NorthAmerican(parentDob, gender, false, false);
return aParent;
}
