可以有人请向我解释该指标的工作原理。
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Aqua
#property indicator_color2 Red
extern int FastMa = 5;
extern int FastMaShift = 0;
extern int FastMAMethod = MODE_LWMA;
extern int FastMAPrice = PRICE_CLOSE;
extern int SlowMa = 13;
extern int SlowMaShift = 0;
extern int SlowMAMethod = MODE_LWMA;
extern int SlowMAPrice = PRICE_CLOSE;
extern string note = "turn on Alert = true; turn off = false";
extern bool alertsOn = true;
extern bool alertsOnCurrent = true;
extern bool alertsMessage = true;
extern bool alertsSound = true;
extern bool alertsEmail = false;
extern string soundfile = "alert2.wav";
//extern string note7 = "Arrow Type";
//extern string note8 = "0=default,1=Thick,2=Thin,3=Hollow";
//extern string note9 = "4=Round,5=Fractal,6=Diagonal Thin";
//extern string note10 = "7=Diagonal Thick,8=Diagonal Hollow";
//extern string note11 = "9=Thumb,10=Finger";
extern int ArrowType = 2;
extern int arrowthickness = 2;
//
//
//
//
//
double CrossUp[];
double CrossDn[];
double trend[];
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int init()
{
IndicatorBuffers(3);
if (ArrowType == 0) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0,DRAW_ARROW,0,arrowthickness); SetIndexArrow(0,119);
SetIndexBuffer(1, CrossDn ); SetIndexStyle(1,DRAW_ARROW,0,arrowthickness); SetIndexArrow(1,119);
}
if (ArrowType == 1) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 233);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 234);
}
else if (ArrowType == 2) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 225);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 226);
}
else if (ArrowType == 3) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 241);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 242);
}
else if (ArrowType == 4) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 221);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 222);
}
else if (ArrowType == 5) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 217);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 218);
}
else if (ArrowType == 6) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 228);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 230);
}
else if (ArrowType == 7) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 236);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 238);
}
else if (ArrowType == 8) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 246);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 248);
}
else if (ArrowType == 9) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 67);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 68);
}
else if (ArrowType == 10) {
SetIndexBuffer(0, CrossUp); SetIndexStyle(0, DRAW_ARROW,0,arrowthickness); SetIndexArrow(0, 71);
SetIndexBuffer(1, CrossDn); SetIndexStyle(1, DRAW_ARROW,0,arrowthickness); SetIndexArrow(1, 72);
}
SetIndexBuffer(2, trend);
return(0);
}
int deinit() { return(0); }
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
int start() {
int counted_bars=IndicatorCounted();
int i,limit;
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
limit = MathMin(Bars-counted_bars,Bars-1);
//
//
//
//
//
for(i=limit; i>=0; i--)
{
double fastMA = iMA(NULL,0,FastMa,FastMaShift,FastMAMethod,FastMAPrice,i);
double slowMA = iMA(NULL,0,SlowMa,SlowMaShift,SlowMAMethod,SlowMAPrice,i);
trend[i] = trend[i+1];
if (fastMA>slowMA) trend[i] = 1;
if (fastMA<slowMA) trend[i] =-1;
//
//
//
//
//
CrossUp[i] = EMPTY_VALUE;
CrossDn[i] = EMPTY_VALUE;
if (trend[i] !=trend[i+1])
if (trend[i] == 1)
CrossUp[i] = Low[i] - iATR(NULL,0,20,i)/2.0;
else CrossDn[i] = High[i]+ iATR(NULL,0,20,i)/2.0;
}
if (alertsOn)
{
if (alertsOnCurrent)
int whichBar = 0;
else whichBar = 1;
//
//
//
//
//
if (trend[whichBar] != trend[whichBar+1])
if (trend[whichBar] == 1)
doAlert("uptrend");
else doAlert("downtrend");
}
return(0);
}
//+------------------------------------------------------------------+
void doAlert(string doWhat)
{
static string previousAlert="nothing";
static datetime previousTime;
string message;
if (previousAlert != doWhat || previousTime != Time[0]) {
previousAlert = doWhat;
previousTime = Time[0];
//
//
//
//
//
message = StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," ma cross ",doWhat);
if (alertsMessage) Alert(message);
if (alertsEmail) SendMail(StringConcatenate(Symbol()," ma cross "),message);
if (alertsSound) PlaySound(soundfile);
}
}
这是MT4的指标，使用语言MQL4，我想创建一个机器人，对于我来说，弄清该指标的工作原理至为重要。
在图表上，这分别由指向下方和上方的红色和蓝色箭头表示。如果您没有盯着该特定窗口，该指示器也会在感觉到趋势变化时生成一个弹出窗口。他们的作用是预示趋势反转并通知您潜在的交易机会。上升趋势结束时会显示红色箭头，指示您卖出，蓝色箭头指示您在上升趋势中购买