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請博易老師幫忙把MT4指標slope direction line轉換成博易大師代碼，謝謝

#property copyright "MT4 release WizardSerg <[email protected]>, ?? ??????? ForexMagazine #104"
#property link????? "[email protected]"

#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 LightBlue
#property indicator_color2 Tomato
//---- input parameters
extern int?????? period=80;
extern int?????? method=3;???????????????????????? // MODE_SMA
extern int?????? price=0;????????????????????????? // PRICE_CLOSE
//---- buffers
double Uptrend[];
double Dntrend[];
double ExtMapBuffer[];


//+------------------------------------------------------------------+
//| Custom indicator initialization function???????????????????????? |
//+------------------------------------------------------------------+
int init()
{
??? IndicatorBuffers(3); ?
??? SetIndexBuffer(0, Uptrend);
??? //ArraySetAsSeries(Uptrend, true);
??? SetIndexBuffer(1, Dntrend);
??? //ArraySetAsSeries(Dntrend, true);
??? SetIndexBuffer(2, ExtMapBuffer);
??? ArraySetAsSeries(ExtMapBuffer, true);
?? ?
??? SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
??? SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,2);
?? ?
??? IndicatorShortName("Slope Direction Line("+period+")");
??? return(0);
}

//+------------------------------------------------------------------+
//| Custor indicator deinitialization function?????????????????????? |
//+------------------------------------------------------------------+
int deinit()
{
??? // ???? ????? ?????? ??????
??? return(0);
}

//+------------------------------------------------------------------+
//| ?????????? ????????????????????????????????????????????????????? |
//+------------------------------------------------------------------+
double WMA(int x, int p)
{
??? return(iMA(NULL, 0, p, 0, method, price, x));?? ?
}

//+------------------------------------------------------------------+
//| Custom indicator iteration function????????????????????????????? |
//+------------------------------------------------------------------+
int start()
{
??? int counted_bars = IndicatorCounted();
?? ?
??? if(counted_bars < 0)
??????? return(-1);
???????????????? ?
??? int x = 0;
??? int p = MathSqrt(period);???????????? ?
??? int e = Bars - counted_bars + period + 1;
?? ?
??? double vect[], trend[];
?? ?
??? if(e > Bars)
??????? e = Bars;?? ?

??? ArrayResize(vect, e);
??? ArraySetAsSeries(vect, true);
??? ArrayResize(trend, e);
??? ArraySetAsSeries(trend, true);
?? ?
??? for(x = 0; x < e; x++)
??? {
??????? vect[x] = 2*WMA(x, period/2) - WMA(x, period);?????? ?
?//?????? Print("Bar date/time: ", TimeToStr(Time[x]), " close: ", Close[x], " vect[", x, "] = ", vect[x], " 2*WMA(p/2) = ", 2*WMA(x, period/2), " WMA(p) = ",? WMA(x, period));?來源:程序化99網（ m.weiqiv.net.cn ）br /> 比博易中的多空線與K線轉向的匹配要精準得多 您好，復制以下代碼。
?
A:=2*WMA(C,40)-WMA(C,80);??
PARTLINE2(A,A>REF(A,1),COLORRED,A<REF(A,1),COLORGRAY),LINETHICK2;? 來源 程序化久久網