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Hedge opening code

  • #1
  • First Post: Dec 4, 2010 1:47am Dec 4, 2010 1:47am
Would be greatly appreciate any ideas about hedge(4pairs) opening. Used simple script:

Inserted Code
   RefreshRates();
   ticket = OrderSend("Symbol 1",OP_BUY,lot1*Multipy,MarketInfo("Symbol 1",MODE_ASK),10,0,0,comment,count,0,CLR_NONE);
   Sleep(500);
   RefreshRates();
   ticket = OrderSend("Symbol 2",OP_BUY,lot2*Multipy,MarketInfo("Symbol 2",MODE_ASK),10,0,0,comment,count,0,CLR_NONE);
   Sleep(500);
   RefreshRates();
   ticket = OrderSend("Symbol 3",OP_SELL,lot3*Multipy,MarketInfo("Symbol 3",MODE_BID),10,0,0,comment,count,0,CLR_NONE);
   Sleep(500);
   RefreshRates();
   ticket = OrderSend("Symbol 4",OP_BUY,lot4*Multipy,MarketInfo("Symbol 4",MODE_ASK),10,0,0,comment,count,0,CLR_NONE);

but receiving requotes very very often. Then wrote an EA that tries to re-enter on the next tick. Still the same problem.
Please advise.
  • #2
  • Dec 4, 2010 3:13am Dec 4, 2010 3:13am
I could be wrong but if I'm understanding the documentation correctly, RefreshRates() only updates the data of the current symbol (the chart which you ran the script against). that's why price on the other symbols don't get refreshed and the price would be different when the script wakes up from your Sleep(500).

not sure if it will help, but you can open up the charts of all 4 symbols (TF doesn't matter) and hopefully that would help your client terminal to get the updated rates correctly.

good luck

regards,
Zen
Programming for a better future.
  • #3
  • Dec 4, 2010 5:03am Dec 4, 2010 5:03am
Quoting Zen_Leow
I could be wrong but if I'm understanding the documentation correctly, RefreshRates() only updates the data of the current symbol (the chart which you ran the script against). that's why price on the other symbols don't get refreshed and the price would be different when the script wakes up from your Sleep(500).

not sure if it will help, but you can open up the charts of all 4 symbols (TF doesn't matter) and hopefully that would help your client terminal to get the updated rates correctly.

good luck

regards,
Zen
If I understand you correctly; if I want several currencies to update for my multi-currency indicator to get the most recent data on each currency pair , I should open a chart in each of the currency pairs that is queried in my indicator? Would it help if I wrote a little EA that only had a RefreshRates() command in the start() and put that on each of the charts, or would that slow everything down?
  • #4
  • Dec 4, 2010 6:01am Dec 4, 2010 6:01am
Hi smjones,

it's been a while...

As I understood it, RefreshRates only works on the chart that it's attached to and every indicator, script, EA has its own memory space to work with so running RefreshRates on one chart is not going to help the other... The problem here I believe is not about RefreshRates but rather has more to do with MarketInfo function not working as it's intended to (at least in the technical sense).

a couple of years ago, I created an indicator for a client that tracks and gives a rating for (almost) every currency (usd, eur, chf, etc) depending on their bullish and bearish relationship to each other according to the currency pair. Since the indicator is only attached to one chart of a certain currency pair, I had to use MarketInfo to retrieve the price values across different pairs.

In theory that would mean I should see the same output from the indicator dashboard regardless of which charts I attach the indi to (since the indicator is looking at the same currency pairs regardless where its attached to). Interestingly enough, that's not the case. I attached the indicator to say gbpjpy and eurusd then looked at the charts side by side. The values were different. further logging shows that some price values of some pairs don't get retrieved by MarketInfo which led to the discrepancies in the calculation of the currency ratings..

Then I had a hunch and tried opening up all the charts of all the required currency pairs and have them running in the background (minimized). After that the MarketInfo function is able to get all values without problems and my indicator becomes consistent across different charts.

I agree that this does not make much sense (and I was rather upset with MQL back then because of this) so I simply list this as one of the many glitches or limitations that MQL4 has to offer. From then on, whenever I'm running a multi-currency indicator or EA, I'd always open up the charts required that helps me get the infomation I need for calculation. they don't need anything attached, just need to be loaded in a chart window that's all. MarketInfo should work properly after that.

I can't comment much on performance issues... all I can say is the more charts you open, the more RAM it's going to eat. so have at least 4GB RAM to play with and you should do fine.

Hope this helps in some way. =)

regards,
Zen
Programming for a better future.
  • #5
  • Dec 4, 2010 6:21am Dec 4, 2010 6:21am
Thanks for the info. What time frame would you recommend, or does it matter on the extra charts.
  • #6
  • Dec 4, 2010 7:48am Dec 4, 2010 7:48am
I think it depends...

if you're just getting the bid and ask prices, then it doesn't matter what charts are opened. if using functions like iOpen, iClose, etc. I'd open the respective charts according to the timeframe.
Programming for a better future.
  • #7
  • Dec 4, 2010 10:52am Dec 4, 2010 10:52am
Zen_Leow, thanks a lot. You are right. I`ve just checked documentation:

bool RefreshRates()

Refreshing of data in pre-defined variables and series arrays.

Seems that opening charts won`t help as this function only refreshing Bid/Ask for current graph. Will wait until Monday. Still hope that your advise will help.
  • #8
  • Dec 4, 2010 2:27pm Dec 4, 2010 2:27pm
Quoting vitali_yv
Would be greatly appreciate any ideas about hedge(4pairs) opening. Please advise.
hey vitali..... is that an exact replica of your script..... is it a 5 digit account......

//--- ideas

Symbol 1 and the 3 others are in quotes .... remove the quotes at all 8 locations.....

if 5 digit account, bump the slippage up a bunch......

//---
//---

with simple scripts, you should be able to scream thru hundreds of orders on all pairs without a hitch provided it's coded properly and the slippage is not to tight......

there might be an occassional trade that fails, that can easily be caught and resent......

in your case here, both sleep and refresh() rates would be a negative......

//---
//---


just as info, scripts are usually written lean and mean...... you should be able to open, close and modify hundreds of orders on all pairs without having to use sleep or refreshrates..... both of those can be a roadblock.....

//---
//---

ea's with unusually high tick counts, as in GetTickCount(), there might be a need for sleep/refresh.....h
to trade and code, keep both simple... no call to impress....h
  • #9
  • Dec 6, 2010 1:13am Dec 6, 2010 1:13am
ty, hayseed
  • #10
  • Dec 6, 2010 7:28am Dec 6, 2010 7:28am
iClose(), iHigh(), iLow(), etc. when used for different symbols than the current chart work without problems, iClose(..., 0) will always return the latest bid price in the other symbol, there does not need to be another chart opened.
  • #11
  • Dec 12, 2010 3:51pm Dec 12, 2010 3:51pm
I think you can retrieve price with MarketetInfo() without opening the chart, as long as you have the pair shown up in the marketwatch window.

the price info of all the pairs in the marketwatch are updated as new tick coming.
  • #12
  • Last Post: Dec 13, 2010 12:58am Dec 13, 2010 12:58am
Anyways opening windows helped a lot.
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