How to open 1 trade per bar - Page 2

ralph.ronnquist · #11 (**permalink**) 04-15-2007, 01:33 PM

yes, well, no: that logic (with the word 'static' added) would be to stop the EA go past on other than the first tick on a bar; thus, then the EA is only allowed to make a trade at the first tick on a bar. Regardless of whether there is an open trade or not. E.g., in a daily time frame, only the first tick after midnight would be a trade option.

Right solution to a different problem.

And, as Kalenzo pointed out, it's probably / possibly appropriate to also tie up the logic by magic number to the subset of trades managed by the EA. Which is another reason for inspecting the trades table.

WNW · #12 (**permalink**) 09-30-2007, 06:13 PM

I'm working on an EA.
When I receive an entry signal, is there a simple way to limit that entry to
only 1 per bar? Some kind of global command?
Oftentimes there are multiple trades around the same area when price continues to retrigger the entry.

Any help appreciated,
Thanks.

HerbertH · #13 (**permalink**) 09-30-2007, 07:18 PM

Quote:

Originally Posted by WNW

I'm working on an EA.
When I receive an entry signal, is there a simple way to limit that entry to
only 1 per bar? Some kind of global command?
Oftentimes there are multiple trades around the same area when price continues to retrigger the entry.

Any help appreciated,
Thanks.

Hi, take a look in this thread: Number of trades per bar
In which the same question (and answer...:-) was discussed.

Cheers,
Herbert

WNW · #14 (**permalink**) 09-30-2007, 08:30 PM

Thanks for your reply.
In reference to your post #3, where is this code placed?

datetime Timestamp = 0;

if(Timestamp != iTime(NULL,0,0))
{
Timestamp = iTime(NULL,0,0);

..your code here..
}

Is it placed jsut before the trading logic?
You referenced this link in the other thread for an example, but it appears to be a dead link:
http://www.forex-tsd.com/132491-post25.html

Thanks.

HerbertH · #15 (**permalink**) 09-30-2007, 09:03 PM

Quote:

Originally Posted by WNW

Thanks for your reply.
In reference to your post #3, where is this code placed?

datetime Timestamp = 0;

if(Timestamp != iTime(NULL,0,0))
{
Timestamp = iTime(NULL,0,0);

..your code here..
}

Is it placed jsut before the trading logic?
You referenced this link in the other thread for an example, but it appears to be a dead link:
http://www.forex-tsd.com/132491-post25.html

Thanks.

It's a bit difficult to tell you where to put this because I don't know the structure of your expert, but most likely you want this in your Start() body.
Put the "datetime TimeStamp = 0" into the global variables at the top of the EA.

The thread with the example coding has been removed, but if you want an example sent or you want me to look at your Expert, just send me a PM with your email address.

Cheers

WNW · #16 (**permalink**) 09-30-2007, 09:19 PM

I'll give that a try, thanks again.

WNW · #17 (**permalink**) 10-01-2007, 05:51 AM

I added the code as follows:
--------------------------
[other variables here]

datetime Timestamp = 0;

//+------------------------------------------------------------------+
//| Expert Initialization |
//+------------------------------------------------------------------+
int init()
{
LastPrice = Bid;
return(0);
}

//+------------------------------------------------------------------+
//| Expert start |
//+------------------------------------------------------------------+

int start()
{
if(Timestamp != iTime(NULL,0,0))
Timestamp = iTime(NULL,0,0);

------------------------------------
and it's not working; still generating multiple trades.
Have I entered it correctly?

The trade logic comes much farther down in the code; unfortunately the code is copyrighted and I cannot disclose it.

HerbertH · #18 (**permalink**) 10-01-2007, 08:04 AM

Quote:

Originally Posted by WNW

I added the code as follows:
--------------------------
[other variables here]

datetime Timestamp = 0;

//+------------------------------------------------------------------+
//| Expert Initialization |
//+------------------------------------------------------------------+
int init()
{
LastPrice = Bid;
Anchor = (Ask+Bid)/2;
return(0);
}

//+------------------------------------------------------------------+
//| Expert start |
//+------------------------------------------------------------------+

int start()
{
if(Timestamp != iTime(NULL,0,0))
Timestamp = iTime(NULL,0,0);

------------------------------------
and it's not working; still generating multiple trades.
Have I entered it correctly?

The trade logic comes much farther down in the code; unfortunately the code is copyrighted and I cannot disclose it.

Keep in mind that the example code I provided will restrict only the enclosed portion of your code which then is being handled once every new bar.

If you enclose ALL of the Start() code inside it will not only trigger new trades every new bar, but it will also execute your code looking for breakeven, trailingstop etc. only once a new bar starts.

The simple recepy for using this method is: Enclose only the part of your coding logic that needs to be handled once every new bar.

I understand your copyright situation, but you have to realise mine as well:
I cannot help you any further than this without any insight in (part of) the coding.
Maybe the code snippets in this merged thread will give you new ideas.

Cheers

WNW · #19 (**permalink**) 10-01-2007, 03:41 PM

Quote:

Originally Posted by HerbertH

If you enclose ALL of the Start() code inside it will not only trigger new trades every new bar, but it will also execute your code looking for breakeven, trailingstop etc. only once a new bar starts.

The simple recepy for using this method is: Enclose only the part of your coding logic that needs to be handled once every new bar.

Thanks again for your reply.

I'm not a coder and am not familiar with MQL syntax.

When you say "enclose" what does that mean in terms of which characters to use? Can you provide an example?

Thanks.

HerbertH · #20 (**permalink**) 10-01-2007, 09:28 PM

Quote:

Originally Posted by WNW

Thanks again for your reply.

I'm not a coder and am not familiar with MQL syntax.

When you say "enclose" what does that mean in terms of which characters to use? Can you provide an example?

Thanks.

With enclose I mean putting your code in between the { } brackets of the code snippet I showed you.

For example:

Code:

int start()
{
     if(Timestamp != iTime(NULL,0,0))
     {
          Timestamp = iTime(NULL,0,0);

          CheckForNewTradeSetup(); // This will be where you put your code which is only allowed to run once every new bar
     }

     CheckOpenTrades();    // This will be where your code is placed, which will run every tick
}

The example shown above will check to open new trades once every new bar,
but will check existing open trades (e.g. to handle breakeven etc) every tick.

Hope this helps

PS. If you are not a coder and this expert is not functioning properly, why don't you just have the original coder have a look at this?

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