using?System;
using?System.Data;
using?System.Configuration;
using?System.Web;
using?System.Web.Security;
using?System.Web.UI;
using?System.Web.UI.WebControls;
using?System.Web.UI.WebControls.WebParts;
using?System.Web.UI.HtmlControls;
using?System.Collections;

///?

///?MoveAverage移動平均法
///?

public?class?MoveAverage
{
????public?ArrayList?xArrayt;
????public?double[]?OriArray;
????public?double[]?OldArray;
???//?public?int?period;
????static?DataTable?dt0?=?new?DataTable（）;
????static?DataTable?dt1?=?new?DataTable（）;
????static?int?n?=?0;
????static?int?m?=?0;
????public?double[]?PMA_dtAim;
????public?double[]?PMA2_dtAim;
????public?double[]?dtAim;
????public?double[]?At;
????public?double[]?Bt;
????///?

????///?從歷史追溯數(shù)據(jù)定時程數(shù)據(jù)起始點設(shè)定步長移動平均
????///?

????///?歷史追溯數(shù)據(jù)表
????///?時程數(shù)據(jù)表
????///?移動步長
????public?MoveAverage（double[]?OriDt?int?previous）
	{
		//
		//?TODO:?在此處添加構(gòu)造函數(shù)邏輯
		//
????????n?=?OriDt.GetLength（0）;
????????m?=?n?-?previous;
????????OriArray?=?new?double[n];
????????OldArray?=?new?double[m];
????????OriArray?=?OriDt;
????????for?（int?i?=?0;?i?????????{
????????????OldArray[i]?=?OriDt[i+previous];
????????}
	}


???///?

???///?一次移動平均
???///?

???///?步長
???///?
????public?double[]?PMA1（int?period）
????{
????????double?Xt?=?0;
????????double?Ft1?=?0;
????????PMA_dtAim?=?new?double[m];
????????try
????????{
????????????for?（int?i?=?0;?i?????????????{
????????????????for?（int?j?=?0;?j?????????????????{
????????????????????Ft1?=?OriArray[n?-?m?-?period-1?+?i?+?j];
????????????????}
????????????????Ft1?/=?period;
????????????????PMA_dtAim[i]?=?Ft1;
????????????????Ft1?=?0;
????????????}
????????}
????????catch（Exception?ex）
????????{
????????????string?errStr?=?period?+?“_PMA1“?+ex.Message.ToString（）;
????????????HttpContext.Current.Response.Write（“ript?language=‘javascript‘>alert（‘“?+?errStr?+?“‘）;ript>“）;
????????}
????????return?PMA_dtAim;
????}
????///?

????///?一次移動平均?預(yù)測下一個值
????///?

????///?///?步長
????///?
????public?double?forecast（int?period）
????{
????????double?FtF?=?0;
????????try
????????{
????????????FtF?=?PMA_dtAim[m?-?1]?+?（OldArray[m?-?1]?-?OldArray[m?-?1?-?period]）?/?period;//?（yArray[m?-?1]?-?yArray[m?-?1?-?period]）?/?period;
????????}
????????catch（Exception?ex）
????????{
????????????string?errStr?=?period?+?“_forcast“?+?ex.Message.ToString（）;
????????????HttpContext.Current.Response.Write（“ript?language=‘javascript‘>alert（‘“?+errStr?+?“‘）;ript>“）;
????????}
????????return?FtF;
????}
/*
????///?

????///?線性二次移動平均法
????///?

????///?
????public?double[]?PMA2（）
????{
????????int?