Auto-Repeat for Scan/Explore

AFL Programming
1

During my testing, I have noticed that when I use the Auto-Repeat option for Explore, the time from the start of one exploration to the start of the next exploration equates to the Auto-repeat time interval chosen in the settings + the time taken to run an exploration.

What I would like to be able to do, is run an exploration every 5 minutes that starts 2 seconds after the last 5 minute bar has closed and I don't want the length of the exploration itself to affect when the next exploration runs. I.e. It keeps starting a new exploration 2 seconds after the last 5 minute bar has closed.

Is it possible to set the auto-repeat option to start x seconds from the close of a specific time interval bar instead within the AFL script itself or in any other way?

2

Wondering how you solved this issue.

3

You can use Batch - it has scheduler http://www.amibroker.com/guide/h_batch.html

4

Interesting, I was not aware of Batch. However it does not seem to support scheduling more fine grained than hourly. Ideally I would like to perform a scan every minute. I will have a go at the OLE interface and see if I can drive the scan that way.

5

This does the trick...

// Does an amibroker scan every minute, on the minute (well 2 secs after).
// run with cscript.exe
// See https://www.amibroker.com/guide/objects.html  for doc on Amibroker OLE interface. 

var analDocPath = "c:\\dev\\ami\\autotrader\\autotrader-analysis1.apx"; // created by saving analysis file (file -> Save AS) in Amibroker

 
try
{
	var AB = new ActiveXObject( "Broker.Application" );   
	var analDoc = AB.AnalysisDocs.Open( analDocPath );

	log("starting")

	while(true)
	{
		var ms = getMsToNext(60);
		WScript.Sleep(ms+2000);
		log("scan")
		analDoc.Run(0); // scan
	}
	
		
}

catch(e)
{
	log( "Exception: " + e.message ); // display error that may occur
}

function log(msg)
{
	WScript.Echo(getDateTimeStr() + " " + msg);
}

	
function getMsToNext(sec)
{
		var now = new Date();
		var r = 0;
		var ms = now.getSeconds()*1000 + now.getMilliseconds() ;
		if (ms < sec * 1000)
			r = sec*1000 - ms;
		else 
			r =  60*1000 - ms + sec*1000;
		return r;
}


function getDateTimeStr()
{
	 var dt = new Date();
	 return	pad(dt.getDate()) + "/" + pad(dt.getMonth()+1)  + "/" + dt.getFullYear() + " " + 
	 		pad(dt.getHours()) + ":" + pad(dt.getMinutes()) + ":" + pad(dt.getSeconds()) +
		    "." + pad(dt.getMilliseconds(),3);
}

function pad(num, size)
{
    if (!size) size = 2;
    var s = num+"";
    while (s.length < size) s = "0" + s;
    return s;
}
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