CopyTime/CopyOpen/CopyHigh/... can't load data before specify period chart have open?

To add comments, please log in or register
Guo Wei Long
190
Guo Wei Long  

Application:

     I use a rectangle to cover a range of a certion trend segment,  and want to get the bars count between rectangle's time1 and time2, 

evaluate the bars count under Period M1,M5,M15...H1, .. etc,  so I can know which period is the best meet for the trend scale.


Solution:

This is no iBarShift function in mq5  anymore,  so I use the convert function somebody share the code:


datetime iTime(string symbol,int tf,int index)
{
   if(index < 0) return(-1);
   ENUM_TIMEFRAMES timeframe=TFMigrate(tf);
   datetime Time[];
   if(CopyTime(symbol, timeframe, index, 1, Time)>0) return(Time[0]);
   else return(-1);

}



int iBarShift(string symbol, int tf, datetime time, bool exact=true)
{
   if(time<0) return(-1);
   //sorry, exact will always =true in this code of mines. no exact=false yet.
   ENUM_TIMEFRAMES timeframe=TFMigrate(tf);
   datetime Time[];
   ArraySetAsSeries(Time,true);  
   if(CopyTime(symbol, timeframe,iTime(symbol,timeframe,0), time, Time)>0) return(ArraySize(Time)-1);
   else return(-1);

}


Problem:

   I try to use the iBarShift  to  get shift postion on specify period for a certain time value,

 but I got a return value -1 when I  specify a period param which without a corresponding chart opened.

 It seems that  CopyXxxx function couldnot load data before a chart open to load it.

 So I had to open all period chart before I call the function?

On the contrary,  it will  return the right value for the function  iBarShift  even before any relate chart opened.


Suggestion

  Experts in MQ5 had became  globle exceed one single chart.  so some globle control shoud be set,  

such as receive specify currency's data  in background automatically without relate chart open?



WikipediaWictionaryChambers (UK)Google imagesGoogle defineThe Free DictionaryJoin exampleWordNetGoogleUrban DictionaryAnswers.comrhymezone.comMerriam-Webster<>0
wvcidfjoguarm
WikipediaWictionaryChambers (UK)Google imagesGoogle defineThe Free DictionaryJoin exampleWordNetGoogleUrban DictionaryAnswers.comrhymezone.comMerriam-Webster<>0
wvcidfjoguarm
Guo Wei Long
190
Guo Wei Long  

I can't imagining there is no  function like  iBarShfit  in MT5.

For those ones who only use linear indicators to construct their trading system, the bar position function like iBarShift  will seldom be used,  even the chart drawing tools is not necessary.

But for other ones,  it's important to analysis the trend structure,  to measure  the Highest, Lowest point,  and the price/ time distance between them.

Al W
163
Al W  

ray, I created that code, but you have the older version.

The issue with loading data before chart is open is definitely annoying. I made a fix for that one to. It's a hack, but it works.

Only thing is that with indicators, the fix is not possible becasue indicators do not allow the Sleep function for good reason.

So, on the first tick your indicator would not have the data from the other periods, but likely by the second tick the data would probably be available. 

The fix is perfect for EA's and Scripts where you need that first tick to be what you expected.


Here's the latest mt4timeseries.mqh I had posted on the old site:

Files:
Guo Wei Long
190
Guo Wei Long  
circlesquares :


ray, I created that code, but you have the older version.

The issue with loading data before chart is open is definitely annoying. I made a fix for that one to. It's a hack, but it works.

Only thing is that with indicators, the fix is not possible becasue indicators do not allow the Sleep function for good reason.

So, on the first tick your indicator would not have the data from the other periods, but likely by the second tick the data would probably be available. 

The fix is perfect for EA's and Scripts where you need that first tick to be what you expected.


Here's the latest mt4timeseries.mqh I had posted on the old site:





Thanks a lot,  the code works fine.  It seems that MT5 function load data is work on asynchronous method,  but we need a blocked calling.
stoxos
3
stoxos  
Al W:

ray, I created that code, but you have the older version.

The issue with loading data before chart is open is definitely annoying. I made a fix for that one to. It's a hack, but it works.

Only thing is that with indicators, the fix is not possible becasue indicators do not allow the Sleep function for good reason.

So, on the first tick your indicator would not have the data from the other periods, but likely by the second tick the data would probably be available. 

The fix is perfect for EA's and Scripts where you need that first tick to be what you expected.


Here's the latest mt4timeseries.mqh I had posted on the old site:


Thank you!

To add comments, please log in or register