编程问题，求高手指点，谢谢！

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2036349 2015.10.19 01:53

哪位能够帮我看一下下面这个TMA指标，我的问题：

这个指标是不是会根据新出来的的价格信息去重新绘制它的指标线，如果能把详细解释加上最好，谢谢了！

//+------------------------------------------------------------------+

//| TriangularMA centered bands.mq4 |

//| mladen |

//| |

//| multiple bands mod eni |

//+------------------------------------------------------------------+

#property copyright "mladen"

#property link "mladenfx@gmail.com"

#property indicator_chart_window

#property indicator_buffers 9

#property indicator_color1 clrMediumSeaGreen

#property indicator_color2 clrMediumSeaGreen

#property indicator_color3 clrMediumSeaGreen

#property indicator_color4 clrPaleVioletRed

#property indicator_color5 clrPaleVioletRed

#property indicator_color6 clrDarkGray

#property indicator_color7 clrDarkGray

#property indicator_color8 clrGoldenrod

#property indicator_color9 clrGoldenrod

#property indicator_style1 STYLE_DOT

#property indicator_style2 STYLE_DOT

#property indicator_style3 STYLE_DOT

#property indicator_style4 STYLE_SOLID

#property indicator_style5 STYLE_SOLID

#property indicator_style6 STYLE_SOLID

#property indicator_style7 STYLE_SOLID

#property indicator_style8 STYLE_SOLID

#property indicator_style9 STYLE_SOLID

#property indicator_width1 1

#property indicator_width2 1

#property indicator_width3 1

#property indicator_width4 1

#property indicator_width5 1

#property indicator_width6 1

#property indicator_width7 1

#property indicator_width8 1

#property indicator_width9 1

extern string TimeFrame = "Current";

extern int HalfLength = 56; // 55

extern int Price = PRICE_CLOSE;

extern double ATRMultiplier1 = 3.5; // 2.1

extern double ATRMultiplier2 = 4.2; // 3.4

extern double ATRMultiplier3 = 4.9; // 5.5

extern double ATRMultiplier4 = 1.0; // 1.0

extern int ATRPeriod = 100;

extern bool Interpolate = true;

extern bool alertsOn = true;

extern bool alertsOnCurrent = false;

extern bool alertsOnHighLow = true;

extern int alertsTMAnumber = 2;

extern bool alertsMessage = true;

extern bool alertsNotification = false;

extern bool alertsEmail = false;

extern bool alertsSound = false;

double buffer1[];

double buffer2[];

double buffer3[];

double buffer4[];

double buffer5[];

double buffer6[];

double buffer7[];

double buffer8[];

double buffer9[];

double trend[];

double slope[];

string indicatorFileName;

bool calculateValue;

bool returnBars;

int timeFrame;

//+------------------------------------------------------------------+

//| |

//+------------------------------------------------------------------+

int init()

{

IndicatorBuffers(11);

HalfLength=MathMax(HalfLength,1);

SetIndexBuffer( 0,buffer1); SetIndexEmptyValue( 0,EMPTY_VALUE); SetIndexDrawBegin(0,HalfLength);

SetIndexBuffer( 1,buffer2); SetIndexEmptyValue( 1,EMPTY_VALUE); SetIndexDrawBegin(1,HalfLength);

SetIndexBuffer( 2,buffer3); SetIndexEmptyValue( 2,EMPTY_VALUE); SetIndexDrawBegin(2,HalfLength);

SetIndexBuffer( 3,buffer4); SetIndexEmptyValue( 3,EMPTY_VALUE); SetIndexDrawBegin(3,HalfLength);

SetIndexBuffer( 4,buffer5); SetIndexEmptyValue( 4,EMPTY_VALUE); SetIndexDrawBegin(4,HalfLength);

SetIndexBuffer( 5,buffer6); SetIndexEmptyValue( 5,EMPTY_VALUE); SetIndexDrawBegin(5,HalfLength);

SetIndexBuffer( 6,buffer7); SetIndexEmptyValue( 6,EMPTY_VALUE); SetIndexDrawBegin(6,HalfLength);

SetIndexBuffer( 7,buffer8); SetIndexEmptyValue( 7,EMPTY_VALUE); SetIndexDrawBegin(7,HalfLength);

SetIndexBuffer( 8,buffer9); SetIndexEmptyValue( 8,EMPTY_VALUE); SetIndexDrawBegin(8,HalfLength);

SetIndexBuffer( 9,trend );

SetIndexBuffer(10,slope ); SetIndexEmptyValue(10,EMPTY_VALUE);

indicatorFileName = WindowExpertName();

returnBars = TimeFrame=="returnBars"; if (returnBars) return(0);

calculateValue = TimeFrame=="calculateValue"; if (calculateValue) return(0);

timeFrame = stringToTimeFrame(TimeFrame);

IndicatorShortName(timeFrameToString(timeFrame)+" TMA bands )"+HalfLength+")");

return(0);

}

int deinit() { return(0); }

//+------------------------------------------------------------------+

//| |

//+------------------------------------------------------------------+

int start()

{

int counted_bars=IndicatorCounted();

int i,j,k,limit;

if(counted_bars<0) return(-1);

if(counted_bars>0) counted_bars--;

limit=MathMin(Bars-1,Bars-counted_bars+HalfLength);

if (returnBars) { buffer1[0] = limit+1; return(0); }

if (calculateValue || timeFrame==Period())

{

double range = 0.0;

for (i=limit; i>=0; i--)

{

double sum = (HalfLength+1)*iMA(NULL,0,1,0,MODE_SMA,Price,i);

double sumw = (HalfLength+1);

for(j=1, k=HalfLength; j<=HalfLength; j++, k--)

{

sum += k*iMA(NULL,0,1,0,MODE_SMA,Price,i+j);

sumw += k;

if (j<=i)

{

sum += k*iMA(NULL,0,1,0,MODE_SMA,Price,i-j);

sumw += k;

}

range = iATR ( NULL, 0, ATRPeriod, i + 10 ) * ATRMultiplier1;

buffer1[i] = sum/sumw;

buffer2[i] = buffer1[i]+range;

buffer3[i] = buffer1[i]-range;

slope [i] = slope[i+1];

if ( buffer1[i] != 0.0 )

{

slope[i] = ( ( buffer1[i] - buffer1[i+1] ) / buffer1[i] ) * 100000;

}

if ( ATRMultiplier2 != 0.0 )

{

range = iATR ( NULL, 0, ATRPeriod, i + 10 ) * ATRMultiplier2;

buffer4[i] = buffer1[i]+range;

buffer5[i] = buffer1[i]-range;

}

if ( ATRMultiplier3 != 0.0 )

{

range = iATR ( NULL, 0, ATRPeriod, i + 10 ) * ATRMultiplier3;

buffer6[i] = buffer1[i]+range;

buffer7[i] = buffer1[i]-range;

}

if ( ATRMultiplier4 != 0.0 )

{

range = iATR ( NULL, 0, ATRPeriod, i + 10 ) * ATRMultiplier4;

buffer8[i] = buffer1[i]+range;

buffer9[i] = buffer1[i]-range;

}

trend[i] = 0;

if (alertsOnHighLow)

{

if ( alertsTMAnumber == 1 && High[i] > buffer2[i] ) trend[i] = 1;

if ( alertsTMAnumber == 1 && Low [i] < buffer3[i] ) trend[i] = -1;

if ( alertsTMAnumber == 2 && High[i] > buffer4[i] ) trend[i] = 1;

if ( alertsTMAnumber == 2 && Low [i] < buffer5[i] ) trend[i] = -1;

if ( alertsTMAnumber == 3 && High[i] > buffer6[i] ) trend[i] = 1;

if ( alertsTMAnumber == 3 && Low [i] < buffer7[i] ) trend[i] = -1;

if ( alertsTMAnumber == 4 && High[i] > buffer8[i] ) trend[i] = 1;

if ( alertsTMAnumber == 4 && Low [i] < buffer9[i] ) trend[i] = -1;

}

else

{

if ( alertsTMAnumber == 1 && Close[i] > buffer2[i] ) trend[i] = 1;

if ( alertsTMAnumber == 1 && Close[i] < buffer3[i] ) trend[i] = -1;

if ( alertsTMAnumber == 2 && Close[i] > buffer4[i] ) trend[i] = 1;

if ( alertsTMAnumber == 2 && Close[i] < buffer5[i] ) trend[i] = -1;

if ( alertsTMAnumber == 3 && Close[i] > buffer6[i] ) trend[i] = 1;

if ( alertsTMAnumber == 3 && Close[i] < buffer7[i] ) trend[i] = -1;

if ( alertsTMAnumber == 4 && Close[i] > buffer8[i] ) trend[i] = 1;

if ( alertsTMAnumber == 4 && Close[i] < buffer9[i] ) trend[i] = -1;

}

if (!calculateValue) manageAlerts();

return(0);

}

limit = MathMax(limit,MathMin( Bars-1, iCustom ( NULL, timeFrame, indicatorFileName, "returnBars", HalfLength, Price, ATRMultiplier1, ATRMultiplier2, ATRMultiplier3, ATRMultiplier4, ATRPeriod, Interpolate, alertsOn, alertsOnCurrent, alertsOnHighLow, alertsTMAnumber, alertsMessage, alertsNotification, alertsEmail, alertsSound, 0, 0 ) * timeFrame / Period() ) );

for(i=limit; i>=0; i--)

{

int y = iBarShift(NULL,timeFrame,Time[i]);

buffer1[i] = iCustom ( NULL, timeFrame, indicatorFileName, "calculateTma", HalfLength, Price, ATRMultiplier1, ATRMultiplier2, ATRMultiplier3, ATRMultiplier4, ATRPeriod, Interpolate, alertsOn, alertsOnCurrent, alertsOnHighLow, alertsTMAnumber, alertsMessage, alertsNotification, alertsEmail, alertsSound, 0, y );

buffer2[i] = iCustom ( NULL, timeFrame, indicatorFileName, "calculateTma", HalfLength, Price, ATRMultiplier1, ATRMultiplier2, ATRMultiplier3, ATRMultiplier4, ATRPeriod, Interpolate, alertsOn, alertsOnCurrent, alertsOnHighLow, alertsTMAnumber, alertsMessage, alertsNotification, alertsEmail, alertsSound, 1, y );

buffer3[i] = iCustom ( NULL, timeFrame, indicatorFileName, "calculateTma", HalfLength, Price, ATRMultiplier1, ATRMultiplier2, ATRMultiplier3, ATRMultiplier4, ATRPeriod, Interpolate, alertsOn, alertsOnCurrent, alertsOnHighLow, alertsTMAnumber, alertsMessage, alertsNotification, alertsEmail, alertsSound, 2, y );

trend[i] = iCustom ( NULL, timeFrame, indicatorFileName, "calculateTma", HalfLength, Price, ATRMultiplier1, ATRMultiplier2, ATRMultiplier3, ATRMultiplier4, ATRPeriod, Interpolate, alertsOn, alertsOnCurrent, alertsOnHighLow, alertsTMAnumber, alertsMessage, alertsNotification, alertsEmail, alertsSound, 3, y );

if (timeFrame <= Period() || y==iBarShift(NULL,timeFrame,Time[i-1])) continue;

if (!Interpolate) continue;

datetime time = iTime(NULL,timeFrame,y);

for(int n = 1; i+n < Bars && Time[i+n] >= time; n++) continue;

for(k = 1; k < n; k++)

{

buffer1[i+k] = buffer1[i] +(buffer1[i+n]-buffer1[i])*k/n;

buffer2[i+k] = buffer2[i] +(buffer2[i+n]-buffer2[i])*k/n;

buffer3[i+k] = buffer3[i] +(buffer3[i+n]-buffer3[i])*k/n;

}

manageAlerts();

return(0);

}

//+-------------------------------------------------------------------

//|

//+-------------------------------------------------------------------

void manageAlerts()

{

if (alertsOn)

{

if (alertsOnCurrent)

int whichBar = 0;

else whichBar = 1; whichBar = iBarShift(NULL,0,iTime(NULL,timeFrame,whichBar));

if (trend[whichBar] != trend[whichBar+1])

{

if (trend[whichBar] == 1) doAlert(whichBar,"up");

if (trend[whichBar] ==-1) doAlert(whichBar,"down");

}

void doAlert(int forBar, string doWhat)

{

static string previousAlert="nothing";

static datetime previousTime;

string message;

if (previousAlert != doWhat || previousTime != Time[forBar]) {

previousAlert = doWhat;

previousTime = Time[forBar];

message = StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," "+timeFrameToString(timeFrame)+" TMA bands price penetrated ",doWhat," band");

if (alertsMessage) Alert(message);

if (alertsNotification) SendNotification(message);

if (alertsEmail) SendMail(StringConcatenate(Symbol(),"TMA bands "),message);

if (alertsSound) PlaySound("alert2.wav");

}

//+-------------------------------------------------------------------

//|

//+-------------------------------------------------------------------

string sTfTable[] = {"M1","M5","M15","M30","H1","H4","D1","W1","MN"};

int iTfTable[] = {1,5,15,30,60,240,1440,10080,43200};

int stringToTimeFrame(string tfs)

{

tfs = StringUpperCase(tfs);

for (int i=ArraySize(iTfTable)-1; i>=0; i--)

if (tfs==sTfTable[i] || tfs==""+iTfTable[i]) return(MathMax(iTfTable[i],Period()));

return(Period());

}

string timeFrameToString(int tf)

{

for (int i=ArraySize(iTfTable)-1; i>=0; i--)

if (tf==iTfTable[i]) return(sTfTable[i]);

return("");

}

string StringUpperCase(string str)

{

string s = str;

for (int length=StringLen(str)-1; length>=0; length--)

{

int ichar = StringGetChar(s, length);

if((ichar > 96 && ichar < 123) || (ichar > 223 && ichar < 256))

s = StringSetChar(s, length, ichar - 32);

else if(ichar > -33 && ichar < 0)

s = StringSetChar(s, length, ichar + 224);

}

return(s);

}

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