如何在 MQL4 中使用 FileWrite() 函数导出超过 63 个参数？
How to export more than 63 parameters using a FileWrite() function in MQL4?
下面是完整的代码，可以让我下载一个货币对的数据，USDJPY
#property copyright ""
#property link ""
#property version "1.00"
#property strict
datetime LastActiontime;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
start("USDJPY",60); // This will produce daily history for GBPUSD
// Copy the above line of code for each currency pair and timeframe, and then press F5 to recompile (or restart MT4)
// First parameter must be a valid currency pair, e.g. GBPUSD
// Second parameter must be valid timeframe, i.e. one of 1, 5, 15, 30, 60 (=H1), 240 (=H4), 1440 (daily), 10080 (weekly), 43200 (monthly)
// To use the currently displayed chart: out_hist(Symbol(),Period());
return(0); // return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
//void OnTick()
//{
//---
// Comparing LastActionTime with the current starting time for the candle
// if(LastActiontime!=Time[0]){ //Code to execute once in the bar
// Print("This code is executed only once in the bar started ",Time[0]);
// LastActiontime=Time[0];
// }
//}
int start(string ccy, int tf)
{
string fname = ccy + "," + tf + ".csv"; // Same folder for each TF (...\experts\files)
//string fname = "TF-" + tf + "\" + ccy + "," + tf + ".csv"; // Different subfolder for each timeframe
int handle = FileOpen(fname, FILE_CSV|FILE_WRITE, ","); // "," means that output data will be separated by commas; change if necessary
if(LastActiontime!=Time[0] && handle>0)
{
FileWrite(handle,"Date,Time,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch"); // This writes the Header record to the file (change or remove to suit)
// for(int i=0; i<iBars(ccy,tf); i++) // Use descending date sequence
for(int i=iBars(ccy,tf)-1; i>=0; i--) // Use ascending date sequence
{
string date1 = TimeToStr(iTime(ccy,tf,i),TIME_DATE);
date1 = StringSubstr(date1,5,2) + "-" + StringSubstr(date1,8,2) + "-" + StringSubstr(date1,0,4);
// NOTE: StringSubstr(date1,5,2) is the MONTH
// StringSubstr(date1,8,2) is the DAY
// StringSubstr(date1,0,4) is the YEAR (4 digits)
// "-" means the separator will be a hyphen
// So if, for example, you want to change the output date format to DD/MM/YYYY, change the above line of code to:
// date1 = StringSubstr(date1,8,2) + "/" + StringSubstr(date1,5,2) + "/" + StringSubstr(date1,0,4);
string time1 = TimeToStr(iTime(ccy,tf,i),TIME_MINUTES);
FileWrite(handle, date1, time1, iOpen(ccy,tf,i), iLow(ccy,tf,i), iHigh(ccy,tf,i), iClose(ccy,tf,i), iVolume(ccy,tf,i),iRSI(ccy,tf,14,PRICE_CLOSE,i), iAC(ccy,tf,i), iAD(ccy,tf,i),iADX(ccy,tf,14,PRICE_CLOSE,MODE_MAIN,i),iAlligator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_GATORJAW,i), iAO(ccy,tf,i), iATR(ccy,tf,14,i), iBearsPower(ccy,tf,13,PRICE_CLOSE,i), iBands(ccy,tf,34,2,0,PRICE_CLOSE,MODE_LOWER,i), iBullsPower(ccy,tf,13,PRICE_CLOSE,i),iCCI(ccy,tf,14,PRICE_TYPICAL,i),iDeMarker(ccy,tf,14,i), iEnvelopes(ccy,tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce(ccy,tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals(ccy,tf,MODE_UPPER,i),iGator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku(ccy,tf,9,26,52,MODE_TENKANSEN,i),iBWMFI(ccy,tf,i),iMomentum(ccy,tf,14,PRICE_CLOSE,i), iMFI(ccy,tf,14,i), iMA(ccy,tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA(ccy,tf,12,26,9,PRICE_CLOSE,i), iMACD(ccy,tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV(ccy,tf,PRICE_CLOSE,i), iSAR(ccy,tf,0.02,0.2,i), iRVI(ccy,tf,10,MODE_MAIN,i), iStdDev(ccy,tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic(ccy,tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR(ccy,tf,14,i), iCustom(ccy,tf,"Vortex_Indicator",14,1,i),iCustom(ccy,tf,"Vortex_Indicator",14,0,i),iCCI(ccy,tf,13,PRICE_TYPICAL,i),iCCI(ccy,tf,12,PRICE_TYPICAL,i),iCCI(ccy,tf,11,PRICE_TYPICAL,i),iCCI(ccy,tf,10,PRICE_TYPICAL,i),iCCI(ccy,tf,9,PRICE_TYPICAL,i),iCCI(ccy,tf,8,PRICE_TYPICAL,i),iCCI(ccy,tf,7,PRICE_TYPICAL,i),iCCI(ccy,tf,6,PRICE_TYPICAL,i),iCCI(ccy,tf,5,PRICE_TYPICAL,i),iCCI(ccy,tf,4,PRICE_TYPICAL,i),iCCI(ccy,tf,3,PRICE_TYPICAL,i),iCCI(ccy,tf,15,PRICE_TYPICAL,i), iCCI(ccy,tf,16,PRICE_TYPICAL,i),iCCI(ccy,tf,17,PRICE_TYPICAL,i),iCCI(ccy,tf,18,PRICE_TYPICAL,i),iCCI(ccy,tf,19,PRICE_TYPICAL,i),iCCI(ccy,tf,20,PRICE_TYPICAL,i),iCCI(ccy,tf,21,PRICE_TYPICAL,i),iCCI(ccy,tf,22,PRICE_TYPICAL,i),iCCI(ccy,tf,24,PRICE_TYPICAL,i),iCCI(ccy,tf,25,PRICE_TYPICAL,i),iCCI(ccy,tf,26,PRICE_TYPICAL,i),iStochastic(ccy,tf,1,3,3,MODE_SMA,0,MODE_MAIN,i));
// The above line writes the data to the file in the order: date, time, open, low, high, close, volume. Change the order to suit, if necessary
}
FileClose(handle);
LastActiontime=Time[0];
Comment("History output complete"); // Display a comment in the upper left corner of the chart to advise that process is complete
}
//----
return(0);
}
如您所见，我在底部附近有一个 "Filewrite" 参数不同。然而，这些仅适用于 USDJPY。我想用相同的 63 个参数写入相同的 csv 文件，但多次写入多个货币对，例如 AUDUSD，如下面的代码所示。
下面的代码是我想做的但不起作用。
#property copyright ""
#property link ""
#property version "1.00"
#property strict
datetime LastActiontime;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{ start("USDJPY",60); // This will produce daily history for GBPUSD
return(0);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
}
int start( string ccy, int tf )
{
string fname = ccy + "," + tf + ".csv"; // Same folder for each TF (...\experts\files)
int handle = FileOpen( fname, FILE_CSV|FILE_WRITE, "," ); // "," means that output data will be separated by commas; change if necessary
if ( LastActiontime != Time[0] && handle > 0 )
{
FileWrite( handle, // This writes the Header record to the file (change or remove to suit)
"Date,Time,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch"
);
// for ( int i = 0; i < iBars( ccy, tf ); i++ ) // Use descending date sequence
for ( int i = iBars( ccy, tf ) - 1; i >= 0; i-- ) // Use ascending date sequence
{
string date1 = TimeToStr( iTime( ccy, tf, i ), TIME_DATE );
date1 = StringSubstr( date1, 5, 2 ) + "-"
+ StringSubstr( date1, 8, 2 ) + "-"
+ StringSubstr( date1, 0, 4 );
// NOTE: StringSubstr(date1,5,2) is the MONTH
// StringSubstr(date1,8,2) is the DAY
// StringSubstr(date1,0,4) is the YEAR (4 digits)
// "-" means the separator will be a hyphen
// So if, for example, you want to change the output date format to DD/MM/YYYY, change the above line of code to:
// date1 = StringSubstr(date1,8,2) + "/" + StringSubstr(date1,5,2) + "/" + StringSubstr(date1,0,4);
string time1 = TimeToStr( iTime( ccy, tf, i ), TIME_MINUTES );
FileWrite( handle,
date1, time1,
iOpen( ccy, tf, i ),
iLow( ccy, tf, i ),
iHigh( ccy, tf, i ),
iClose( ccy, tf, i ),
iVolume( ccy, tf, i ),
iRSI( ccy, tf, 14, PRICE_CLOSE, i ),
iAC( ccy, tf, i ),
iAD( ccy, tf, i ),
iADX( ccy, tf, 14, PRICE_CLOSE, MODE_MAIN, i ),
iAlligator( ccy, tf, 13, 8, 8, 5, 5, 3, MODE_SMMA, PRICE_MEDIAN, MODE_GATORJAW, i ),
iAO( ccy, tf, i ),
iATR( ccy, tf, 14, i ),
iBearsPower( ccy, tf, 13, PRICE_CLOSE, i ),
iBands( ccy, tf, 34, 2, 0, PRICE_CLOSE, MODE_LOWER, i ),
iBullsPower( ccy, tf, 13, PRICE_CLOSE, i ),
iCCI( ccy, tf, 14, PRICE_TYPICAL, i ),
iDeMarker( ccy, tf, 14, i ),
iEnvelopes(ccy,tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce(ccy,tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals(ccy,tf,MODE_UPPER,i),iGator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku(ccy,tf,9,26,52,MODE_TENKANSEN,i),iBWMFI(ccy,tf,i),iMomentum(ccy,tf,14,PRICE_CLOSE,i), iMFI(ccy,tf,14,i), iMA(ccy,tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA(ccy,tf,12,26,9,PRICE_CLOSE,i), iMACD(ccy,tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV(ccy,tf,PRICE_CLOSE,i), iSAR(ccy,tf,0.02,0.2,i), iRVI(ccy,tf,10,MODE_MAIN,i), iStdDev(ccy,tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic(ccy,tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR(ccy,tf,14,i), iCustom(ccy,tf,"Vortex_Indicator",14,1,i),iCustom(ccy,tf,"Vortex_Indicator",14,0,i),iCCI(ccy,tf,13,PRICE_TYPICAL,i),iCCI(ccy,tf,12,PRICE_TYPICAL,i),iCCI(ccy,tf,11,PRICE_TYPICAL,i),iCCI(ccy,tf,10,PRICE_TYPICAL,i),iCCI(ccy,tf,9,PRICE_TYPICAL,i),iCCI(ccy,tf,8,PRICE_TYPICAL,i),iCCI(ccy,tf,7,PRICE_TYPICAL,i),iCCI(ccy,tf,6,PRICE_TYPICAL,i),iCCI(ccy,tf,5,PRICE_TYPICAL,i),iCCI(ccy,tf,4,PRICE_TYPICAL,i),iCCI(ccy,tf,3,PRICE_TYPICAL,i),iCCI(ccy,tf,15,PRICE_TYPICAL,i), iCCI(ccy,tf,16,PRICE_TYPICAL,i),iCCI(ccy,tf,17,PRICE_TYPICAL,i),iCCI(ccy,tf,18,PRICE_TYPICAL,i),iCCI(ccy,tf,19,PRICE_TYPICAL,i),iCCI(ccy,tf,20,PRICE_TYPICAL,i),iCCI(ccy,tf,21,PRICE_TYPICAL,i),iCCI(ccy,tf,22,PRICE_TYPICAL,i),iCCI(ccy,tf,24,PRICE_TYPICAL,i),iCCI(ccy,tf,25,PRICE_TYPICAL,i),iCCI(ccy,tf,26,PRICE_TYPICAL,i),iStochastic(ccy,tf,1,3,3,MODE_SMA,0,MODE_MAIN,i), iOpen("AUDUSD",tf,i), iLow("AUDUSD",tf,i), iHigh("AUDUSD",tf,i), iClose("AUDUSD",tf,i), iVolume("AUDUSD",tf,i),iRSI("AUDUSD",tf,14,PRICE_CLOSE,i), iAC("AUDUSD",tf,i), iAD("AUDUSD",tf,i),iADX("AUDUSD",tf,14,PRICE_CLOSE,MODE_MAIN,i),iAlligator("AUDUSD",tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_GATORJAW,i), iAO("AUDUSD",tf,i), iATR("AUDUSD",tf,14,i), iBearsPower("AUDUSD",tf,13,PRICE_CLOSE,i), iBands("AUDUSD",tf,34,2,0,PRICE_CLOSE,MODE_LOWER,i), iBullsPower("AUDUSD",tf,13,PRICE_CLOSE,i),iCCI("AUDUSD",tf,14,PRICE_TYPICAL,i),iDeMarker("AUDUSD",tf,14,i), iEnvelopes("AUDUSD",tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce("AUDUSD",tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals("AUDUSD",tf,MODE_UPPER,i),iGator("AUDUSD",tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku("AUDUSD",tf,9,26,52,MODE_TENKANSEN,i),iBWMFI("AUDUSD",tf,i),iMomentum("AUDUSD",tf,14,PRICE_CLOSE,i), iMFI("AUDUSD",tf,14,i), iMA("AUDUSD",tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA("AUDUSD",tf,12,26,9,PRICE_CLOSE,i), iMACD("AUDUSD",tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV("AUDUSD",tf,PRICE_CLOSE,i), iSAR("AUDUSD",tf,0.02,0.2,i), iRVI("AUDUSD",tf,10,MODE_MAIN,i), iStdDev("AUDUSD",tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic("AUDUSD",tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR("AUDUSD",tf,14,i), iCustom("AUDUSD",tf,"Vortex_Indicator",14,1,i),iCustom("AUDUSD",tf,"Vortex_Indicator",14,0,i),iCCI("AUDUSD",tf,13,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,12,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,11,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,10,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,9,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,8,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,7,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,6,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,5,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,4,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,3,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,15,PRICE_TYPICAL,i), iCCI("AUDUSD",tf,16,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,17,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,18,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,19,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,20,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,21,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,22,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,24,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,25,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,26,PRICE_TYPICAL,i),iStochastic("AUDUSD",tf,1,3,3,MODE_SMA,0,MODE_MAIN,i),
);
// The above line writes the data to the file in the order: date, time, open, low, high, close, volume. Change the order to suit, if necessary
}
FileClose(handle);
LastActiontime=Time[0];
Comment("History output complete"); // Display a comment in the upper left corner of the chart to advise that process is complete
}
//----
return(0);
}
string template = "%s, %.5f, %.5f"; //add as much parameters here as you need
string toWrite = StringFormat(template,TimeToStr(Time[i]),Open[i],Close[i]);
FileWrite(handle,toWrite);
第 0 步：Space-X "Just Read the Instructions" 有一些值：
MQL4 代码执行环境有几种特定形式的代码。您已经选择了第二个最不可行的并且已经破解了特定用途的 OnInit(){...} 处理程序，以便通过立即调用 start( str, int ).
来完成您需要的工作
执行此操作的适当步骤是使用 MQL4-脚本，其中简单的开始-停止操作序列不会破坏其他 MetaTrader 4 终端实时执行调整工具的稳定性。
Script is a program intended for a single execution of some actions. Unlike Expert Advisors, scripts do not process any actions, except for the start event ( this requires the OnStart(){...} handler function in a script ). Scripts are stored in terminal_directory\MQL4\Scripts
下一篇："Just Read the Instructions"原理将展示：
FileWrite
Parameters
file_handle
[in] File descriptor returned by FileOpen().
...
[in] The list of parameters separated by commas, to write to the file. The number of written parameters can be up to 63.
解决方案：同样，"Just Read the Instructions" 就足够了：
StringFormat 也不起作用：
Total number of parameters can't exceed 64 including the format string.
您的方法是（是的，阅读文档 :o）和...）使用简单的组合步骤：
StringConcatenate( a, // 1.
b, // 2.
c,
..
zz // 63.
);
一旦我需要组装更多参数，所以我使用了：
StringConcatenate( StringConcatenate( a_1, b_1, c_1, ..., zz_1 ),
StringConcatenate( a_2, b_2, c_2, ..., zz_2 ),
StringConcatenate( a_3, b_3, c_3, ..., zz_3 ),
...
StringConcatenate( a63, b63, c63, ..., zz63 )
);
仍然可以进行更深的嵌套，因此 63*63*63 ... *63 可能会增加，直到 RAM 仍然足够。
结语：
还应注意，在 GBPUSD-图表上初始化 MQL4 脚本将使 MetaTrader4 的 GBPUSD-部分可访问终端。更需要注意的是，如果有人想阅读图表-非本地 货币 TOHLCV 记录，如果 MetaTrader4 终端 [历史中心] 还没有从一些之前与 MetaTrader4 服务器端存储库的交互。
下面是完整的代码，可以让我下载一个货币对的数据，USDJPY
#property copyright ""
#property link ""
#property version "1.00"
#property strict
datetime LastActiontime;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
start("USDJPY",60); // This will produce daily history for GBPUSD
// Copy the above line of code for each currency pair and timeframe, and then press F5 to recompile (or restart MT4)
// First parameter must be a valid currency pair, e.g. GBPUSD
// Second parameter must be valid timeframe, i.e. one of 1, 5, 15, 30, 60 (=H1), 240 (=H4), 1440 (daily), 10080 (weekly), 43200 (monthly)
// To use the currently displayed chart: out_hist(Symbol(),Period());
return(0); // return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
//void OnTick()
//{
//---
// Comparing LastActionTime with the current starting time for the candle
// if(LastActiontime!=Time[0]){ //Code to execute once in the bar
// Print("This code is executed only once in the bar started ",Time[0]);
// LastActiontime=Time[0];
// }
//}
int start(string ccy, int tf)
{
string fname = ccy + "," + tf + ".csv"; // Same folder for each TF (...\experts\files)
//string fname = "TF-" + tf + "\" + ccy + "," + tf + ".csv"; // Different subfolder for each timeframe
int handle = FileOpen(fname, FILE_CSV|FILE_WRITE, ","); // "," means that output data will be separated by commas; change if necessary
if(LastActiontime!=Time[0] && handle>0)
{
FileWrite(handle,"Date,Time,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch"); // This writes the Header record to the file (change or remove to suit)
// for(int i=0; i<iBars(ccy,tf); i++) // Use descending date sequence
for(int i=iBars(ccy,tf)-1; i>=0; i--) // Use ascending date sequence
{
string date1 = TimeToStr(iTime(ccy,tf,i),TIME_DATE);
date1 = StringSubstr(date1,5,2) + "-" + StringSubstr(date1,8,2) + "-" + StringSubstr(date1,0,4);
// NOTE: StringSubstr(date1,5,2) is the MONTH
// StringSubstr(date1,8,2) is the DAY
// StringSubstr(date1,0,4) is the YEAR (4 digits)
// "-" means the separator will be a hyphen
// So if, for example, you want to change the output date format to DD/MM/YYYY, change the above line of code to:
// date1 = StringSubstr(date1,8,2) + "/" + StringSubstr(date1,5,2) + "/" + StringSubstr(date1,0,4);
string time1 = TimeToStr(iTime(ccy,tf,i),TIME_MINUTES);
FileWrite(handle, date1, time1, iOpen(ccy,tf,i), iLow(ccy,tf,i), iHigh(ccy,tf,i), iClose(ccy,tf,i), iVolume(ccy,tf,i),iRSI(ccy,tf,14,PRICE_CLOSE,i), iAC(ccy,tf,i), iAD(ccy,tf,i),iADX(ccy,tf,14,PRICE_CLOSE,MODE_MAIN,i),iAlligator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_GATORJAW,i), iAO(ccy,tf,i), iATR(ccy,tf,14,i), iBearsPower(ccy,tf,13,PRICE_CLOSE,i), iBands(ccy,tf,34,2,0,PRICE_CLOSE,MODE_LOWER,i), iBullsPower(ccy,tf,13,PRICE_CLOSE,i),iCCI(ccy,tf,14,PRICE_TYPICAL,i),iDeMarker(ccy,tf,14,i), iEnvelopes(ccy,tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce(ccy,tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals(ccy,tf,MODE_UPPER,i),iGator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku(ccy,tf,9,26,52,MODE_TENKANSEN,i),iBWMFI(ccy,tf,i),iMomentum(ccy,tf,14,PRICE_CLOSE,i), iMFI(ccy,tf,14,i), iMA(ccy,tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA(ccy,tf,12,26,9,PRICE_CLOSE,i), iMACD(ccy,tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV(ccy,tf,PRICE_CLOSE,i), iSAR(ccy,tf,0.02,0.2,i), iRVI(ccy,tf,10,MODE_MAIN,i), iStdDev(ccy,tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic(ccy,tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR(ccy,tf,14,i), iCustom(ccy,tf,"Vortex_Indicator",14,1,i),iCustom(ccy,tf,"Vortex_Indicator",14,0,i),iCCI(ccy,tf,13,PRICE_TYPICAL,i),iCCI(ccy,tf,12,PRICE_TYPICAL,i),iCCI(ccy,tf,11,PRICE_TYPICAL,i),iCCI(ccy,tf,10,PRICE_TYPICAL,i),iCCI(ccy,tf,9,PRICE_TYPICAL,i),iCCI(ccy,tf,8,PRICE_TYPICAL,i),iCCI(ccy,tf,7,PRICE_TYPICAL,i),iCCI(ccy,tf,6,PRICE_TYPICAL,i),iCCI(ccy,tf,5,PRICE_TYPICAL,i),iCCI(ccy,tf,4,PRICE_TYPICAL,i),iCCI(ccy,tf,3,PRICE_TYPICAL,i),iCCI(ccy,tf,15,PRICE_TYPICAL,i), iCCI(ccy,tf,16,PRICE_TYPICAL,i),iCCI(ccy,tf,17,PRICE_TYPICAL,i),iCCI(ccy,tf,18,PRICE_TYPICAL,i),iCCI(ccy,tf,19,PRICE_TYPICAL,i),iCCI(ccy,tf,20,PRICE_TYPICAL,i),iCCI(ccy,tf,21,PRICE_TYPICAL,i),iCCI(ccy,tf,22,PRICE_TYPICAL,i),iCCI(ccy,tf,24,PRICE_TYPICAL,i),iCCI(ccy,tf,25,PRICE_TYPICAL,i),iCCI(ccy,tf,26,PRICE_TYPICAL,i),iStochastic(ccy,tf,1,3,3,MODE_SMA,0,MODE_MAIN,i));
// The above line writes the data to the file in the order: date, time, open, low, high, close, volume. Change the order to suit, if necessary
}
FileClose(handle);
LastActiontime=Time[0];
Comment("History output complete"); // Display a comment in the upper left corner of the chart to advise that process is complete
}
//----
return(0);
}
如您所见，我在底部附近有一个 "Filewrite" 参数不同。然而，这些仅适用于 USDJPY。我想用相同的 63 个参数写入相同的 csv 文件，但多次写入多个货币对，例如 AUDUSD，如下面的代码所示。
下面的代码是我想做的但不起作用。
#property copyright ""
#property link ""
#property version "1.00"
#property strict
datetime LastActiontime;
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{ start("USDJPY",60); // This will produce daily history for GBPUSD
return(0);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
}
int start( string ccy, int tf )
{
string fname = ccy + "," + tf + ".csv"; // Same folder for each TF (...\experts\files)
int handle = FileOpen( fname, FILE_CSV|FILE_WRITE, "," ); // "," means that output data will be separated by commas; change if necessary
if ( LastActiontime != Time[0] && handle > 0 )
{
FileWrite( handle, // This writes the Header record to the file (change or remove to suit)
"Date,Time,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch,Open,Low,High,Close,Volume,RSI,AC,AD,ADX,Alligator,AO,ATR,BearsPower,Bands,BullsPower,CCI,DeMarker,Envelopes,Force,Fractals,Gator,Ichimoku,BWMFI,Momentum,MFI,MA,OsMA,MACD,OBV,SAR,RVI,StdDev,Stochastic,WPR,Vortex_minus,Vortex_positive,CCI13,CCI12,CCI11,CC10,CCI9,CCI8,CCI7,CCI6,CCI5,CCI4,CCI3,CCI15,CCI16,CCI17,CCI18,CCI19,CCI20,CCI21,CCI22,CCI24,CCI25,CCI26,sstoch"
);
// for ( int i = 0; i < iBars( ccy, tf ); i++ ) // Use descending date sequence
for ( int i = iBars( ccy, tf ) - 1; i >= 0; i-- ) // Use ascending date sequence
{
string date1 = TimeToStr( iTime( ccy, tf, i ), TIME_DATE );
date1 = StringSubstr( date1, 5, 2 ) + "-"
+ StringSubstr( date1, 8, 2 ) + "-"
+ StringSubstr( date1, 0, 4 );
// NOTE: StringSubstr(date1,5,2) is the MONTH
// StringSubstr(date1,8,2) is the DAY
// StringSubstr(date1,0,4) is the YEAR (4 digits)
// "-" means the separator will be a hyphen
// So if, for example, you want to change the output date format to DD/MM/YYYY, change the above line of code to:
// date1 = StringSubstr(date1,8,2) + "/" + StringSubstr(date1,5,2) + "/" + StringSubstr(date1,0,4);
string time1 = TimeToStr( iTime( ccy, tf, i ), TIME_MINUTES );
FileWrite( handle,
date1, time1,
iOpen( ccy, tf, i ),
iLow( ccy, tf, i ),
iHigh( ccy, tf, i ),
iClose( ccy, tf, i ),
iVolume( ccy, tf, i ),
iRSI( ccy, tf, 14, PRICE_CLOSE, i ),
iAC( ccy, tf, i ),
iAD( ccy, tf, i ),
iADX( ccy, tf, 14, PRICE_CLOSE, MODE_MAIN, i ),
iAlligator( ccy, tf, 13, 8, 8, 5, 5, 3, MODE_SMMA, PRICE_MEDIAN, MODE_GATORJAW, i ),
iAO( ccy, tf, i ),
iATR( ccy, tf, 14, i ),
iBearsPower( ccy, tf, 13, PRICE_CLOSE, i ),
iBands( ccy, tf, 34, 2, 0, PRICE_CLOSE, MODE_LOWER, i ),
iBullsPower( ccy, tf, 13, PRICE_CLOSE, i ),
iCCI( ccy, tf, 14, PRICE_TYPICAL, i ),
iDeMarker( ccy, tf, 14, i ),
iEnvelopes(ccy,tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce(ccy,tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals(ccy,tf,MODE_UPPER,i),iGator(ccy,tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku(ccy,tf,9,26,52,MODE_TENKANSEN,i),iBWMFI(ccy,tf,i),iMomentum(ccy,tf,14,PRICE_CLOSE,i), iMFI(ccy,tf,14,i), iMA(ccy,tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA(ccy,tf,12,26,9,PRICE_CLOSE,i), iMACD(ccy,tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV(ccy,tf,PRICE_CLOSE,i), iSAR(ccy,tf,0.02,0.2,i), iRVI(ccy,tf,10,MODE_MAIN,i), iStdDev(ccy,tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic(ccy,tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR(ccy,tf,14,i), iCustom(ccy,tf,"Vortex_Indicator",14,1,i),iCustom(ccy,tf,"Vortex_Indicator",14,0,i),iCCI(ccy,tf,13,PRICE_TYPICAL,i),iCCI(ccy,tf,12,PRICE_TYPICAL,i),iCCI(ccy,tf,11,PRICE_TYPICAL,i),iCCI(ccy,tf,10,PRICE_TYPICAL,i),iCCI(ccy,tf,9,PRICE_TYPICAL,i),iCCI(ccy,tf,8,PRICE_TYPICAL,i),iCCI(ccy,tf,7,PRICE_TYPICAL,i),iCCI(ccy,tf,6,PRICE_TYPICAL,i),iCCI(ccy,tf,5,PRICE_TYPICAL,i),iCCI(ccy,tf,4,PRICE_TYPICAL,i),iCCI(ccy,tf,3,PRICE_TYPICAL,i),iCCI(ccy,tf,15,PRICE_TYPICAL,i), iCCI(ccy,tf,16,PRICE_TYPICAL,i),iCCI(ccy,tf,17,PRICE_TYPICAL,i),iCCI(ccy,tf,18,PRICE_TYPICAL,i),iCCI(ccy,tf,19,PRICE_TYPICAL,i),iCCI(ccy,tf,20,PRICE_TYPICAL,i),iCCI(ccy,tf,21,PRICE_TYPICAL,i),iCCI(ccy,tf,22,PRICE_TYPICAL,i),iCCI(ccy,tf,24,PRICE_TYPICAL,i),iCCI(ccy,tf,25,PRICE_TYPICAL,i),iCCI(ccy,tf,26,PRICE_TYPICAL,i),iStochastic(ccy,tf,1,3,3,MODE_SMA,0,MODE_MAIN,i), iOpen("AUDUSD",tf,i), iLow("AUDUSD",tf,i), iHigh("AUDUSD",tf,i), iClose("AUDUSD",tf,i), iVolume("AUDUSD",tf,i),iRSI("AUDUSD",tf,14,PRICE_CLOSE,i), iAC("AUDUSD",tf,i), iAD("AUDUSD",tf,i),iADX("AUDUSD",tf,14,PRICE_CLOSE,MODE_MAIN,i),iAlligator("AUDUSD",tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_GATORJAW,i), iAO("AUDUSD",tf,i), iATR("AUDUSD",tf,14,i), iBearsPower("AUDUSD",tf,13,PRICE_CLOSE,i), iBands("AUDUSD",tf,34,2,0,PRICE_CLOSE,MODE_LOWER,i), iBullsPower("AUDUSD",tf,13,PRICE_CLOSE,i),iCCI("AUDUSD",tf,14,PRICE_TYPICAL,i),iDeMarker("AUDUSD",tf,14,i), iEnvelopes("AUDUSD",tf,14,MODE_SMA,10,PRICE_CLOSE,0.10,MODE_UPPER,i),iForce("AUDUSD",tf,13,MODE_SMA,PRICE_CLOSE,i),iFractals("AUDUSD",tf,MODE_UPPER,i),iGator("AUDUSD",tf,13,8,8,5,5,3,MODE_SMMA,PRICE_MEDIAN,MODE_UPPER,i),iIchimoku("AUDUSD",tf,9,26,52,MODE_TENKANSEN,i),iBWMFI("AUDUSD",tf,i),iMomentum("AUDUSD",tf,14,PRICE_CLOSE,i), iMFI("AUDUSD",tf,14,i), iMA("AUDUSD",tf,13,8,MODE_SMMA,PRICE_MEDIAN,i), iOsMA("AUDUSD",tf,12,26,9,PRICE_CLOSE,i), iMACD("AUDUSD",tf,12,26,9,PRICE_CLOSE,MODE_MAIN,i),iOBV("AUDUSD",tf,PRICE_CLOSE,i), iSAR("AUDUSD",tf,0.02,0.2,i), iRVI("AUDUSD",tf,10,MODE_MAIN,i), iStdDev("AUDUSD",tf,10,0,MODE_EMA,PRICE_CLOSE,i), iStochastic("AUDUSD",tf,5,3,3,MODE_SMA,0,MODE_MAIN,i), iWPR("AUDUSD",tf,14,i), iCustom("AUDUSD",tf,"Vortex_Indicator",14,1,i),iCustom("AUDUSD",tf,"Vortex_Indicator",14,0,i),iCCI("AUDUSD",tf,13,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,12,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,11,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,10,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,9,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,8,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,7,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,6,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,5,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,4,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,3,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,15,PRICE_TYPICAL,i), iCCI("AUDUSD",tf,16,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,17,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,18,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,19,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,20,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,21,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,22,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,24,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,25,PRICE_TYPICAL,i),iCCI("AUDUSD",tf,26,PRICE_TYPICAL,i),iStochastic("AUDUSD",tf,1,3,3,MODE_SMA,0,MODE_MAIN,i),
);
// The above line writes the data to the file in the order: date, time, open, low, high, close, volume. Change the order to suit, if necessary
}
FileClose(handle);
LastActiontime=Time[0];
Comment("History output complete"); // Display a comment in the upper left corner of the chart to advise that process is complete
}
//----
return(0);
}
string template = "%s, %.5f, %.5f"; //add as much parameters here as you need
string toWrite = StringFormat(template,TimeToStr(Time[i]),Open[i],Close[i]);
FileWrite(handle,toWrite);
第 0 步：Space-X "Just Read the Instructions" 有一些值：
MQL4 代码执行环境有几种特定形式的代码。您已经选择了第二个最不可行的并且已经破解了特定用途的 OnInit(){...} 处理程序，以便通过立即调用 start( str, int ).
执行此操作的适当步骤是使用 MQL4-脚本，其中简单的开始-停止操作序列不会破坏其他 MetaTrader 4 终端实时执行调整工具的稳定性。
Script is a program intended for a single execution of some actions. Unlike Expert Advisors, scripts do not process any actions, except for the start event ( this requires the
OnStart(){...}handler function in a script ). Scripts are stored in terminal_directory\MQL4\Scripts
下一篇："Just Read the Instructions"原理将展示：
FileWrite
Parametersfile_handle[in] File descriptor returned by
FileOpen()....
[in] The list of parameters separated by commas, to write to the file. The number of written parameters can be up to 63.
解决方案：同样，"Just Read the Instructions" 就足够了：
StringFormat 也不起作用：
Total number of parameters can't exceed 64 including the format string.
您的方法是（是的，阅读文档 :o）和...）使用简单的组合步骤：
StringConcatenate( a, // 1.
b, // 2.
c,
..
zz // 63.
);
一旦我需要组装更多参数，所以我使用了：
StringConcatenate( StringConcatenate( a_1, b_1, c_1, ..., zz_1 ),
StringConcatenate( a_2, b_2, c_2, ..., zz_2 ),
StringConcatenate( a_3, b_3, c_3, ..., zz_3 ),
...
StringConcatenate( a63, b63, c63, ..., zz63 )
);
仍然可以进行更深的嵌套，因此 63*63*63 ... *63 可能会增加，直到 RAM 仍然足够。
结语：
还应注意，在 GBPUSD-图表上初始化 MQL4 脚本将使 MetaTrader4 的 GBPUSD-部分可访问终端。更需要注意的是，如果有人想阅读图表-非本地 货币 TOHLCV 记录，如果 MetaTrader4 终端 [历史中心] 还没有从一些之前与 MetaTrader4 服务器端存储库的交互。