Hallo can someone please help me, I've got this table:
Valuation Date Construction
30/03/2009 30,625.26
30/04/2009 269,825.04
30/05/2009 850,056.45
30/06/2009 1,922,475.06
30/07/2009 3,500,852.19
30/08/2009 5,757,055.16
30/09/2009 8,699,041.1
30/10/2009 12,232,330.17
30/11/2009 16,612,763.46
30/12/2009 19,166,542.19
30/01/2010 22,098,191.54
28/02/2010 33,539,289.47
30/03/2010 40,518,025
30/04/2010 48,372,377.98
30/05/2010 56,543,248.62
30/06/2010 65,507,314.28
30/07/2010 74,607,415.4
30/08/2010 84,352,063.34
30/09/2010 94,325,187.87
30/10/2010 104,060,459.19
30/11/2010 114,040,884.2
30/12/2010 119,094,482.8
30/01/2011 124,342,210.61
28/02/2011 140,316,539.09
30/03/2011 146,909,564.95
Calculated from this formula:
public string Calculation(double b, DateTime validation, DateTime start, DateTime end, double alpha, double beta)
{
//start date(t1)
System.TimeSpan sp_start =
validation.Subtract(start);
string sp_start_str = sp_start.TotalDays.ToString("#");
double t1 = double.Parse(sp_start_str);
// change accordingly
if (validation.Month == 12)
t1 = t1 - 14;
if (validation.Month == 01)
t1 = t1 - 28;
// end date(t2)
System.TimeSpan sp_end =
end.Subtract(start);
string sp_end_str = sp_end.TotalDays.ToString("#");
double t2 = double.Parse(sp_end_str);
t2 = t2 - 28;
double divide = (t1) / (t2);
double minus1 = (1 - (divide));
double pow1 = 1 - (Math.Pow(minus1, alpha));
double calculation = Math.Round(b * (Math.Pow(pow1, beta)), 2);
return String.Format("{0:#,###,###,###.##}", calculation);
}What i need to do is:
The first January, all the months following t2 = 28;
After the second January, all the months following t2 = 56;
I probably need to use a for loop??? But not sure how to go about this.
Please someone help!!
Thanks.