|
PureBytes Links
Trading Reference Links
|
Hi
Starting to make sense of this.
This is for Alertif based on Indicator/Chart pane. Not tested for AA
Alertif.afl only.
Time 11: 30
Set chart to 5 min
AA settings to 5 min.
Lookback to 1 returns a signal at 11: 25.
*** Seems that this value gets cached somewhere in AB or RAM ?? ***
Changing the Chart time interval to 1 hour means AB is now looking for a
signal within the prior 1 hourly bar.
This will inevitably be earlier than the 11:25 signal and (even with
Behaviour flags set to 1+2 to allow repeated new signals) we get no
signals, because there is no new signal. So it _seems_ AB has stopped
working.
Change timeframe to longer timeframes, THEN Shut down AB and restart
gets this going again.
Have tried just exiting the chart, going to another chart for a while,
changing Chart time period and AA settings there and then re-entering
the first chart with these new settings sometimes allows new hourly
signal to come through.
Just doing a Refresh All does not seem to do the trick.
It seems that while testing if we change the timeframe to a longer one,
thereby not creating a new signal we appear to get no signal.
Is there a clear cache type function somewhere that I have not come
across, that we could use to flush this?
This is preliminary and subject to further tests.
Regards
ChrisB
ChrisB wrote:
>
> Hi to all.
>
> Seems that going back to posts as far back as 2002 most of the Alertif
> threads just were not answered or satisfactorily resolved.
>
> Having set up an hourly strategy I would like to get hourly Scans to
> give me an alert.
>
> Having only Basic AB / AFL skill this seems to be a tall order.
>
> Here is my take after two day of trials:
>
> 1. Alertif sometimes just stops working. Without changing the code,
> settings or AB layout, just rebooting the PC will fix this.
>
> 2. Indicator mode and Scan mode seem to work differently: incoming new
> prices in the Indicator mode will give new signals.
>
> 3. In an attempt to understand the Indicator mode because my Signals
> will come from Indicator mode, I have done the following.
>
> I get 10 secs feed from forex datasource.
> Tools , preferences, alerts has all three checked: indicator,commentar
> y, AA.
> My database is set to 5 min bars so I assume this is my shortest Scan
> period.
> The EURUSD has traded over 1.400 since November so this code should work
> so I expect a buy signal every bar or new price feed.
> I have current symbol checked and have EURUSD open.
> To simplify things I have no text output and no audio output.
> "5. Flag Behaviour" set to 1+2 as per help file to get repeated alerts
> for testing.
>
> The only things I have changed are the Chart time, AA settings time and
> Run Every settings.
> I expect a signal every time I get a new price (every 10 seconds.)
>
> This only seems to apply if I have my Chart set to 5 min, and the AA
> settings to 5 min.
>
> How would I set my chart to Hourly and then get a signal every time the
> price updates?
>
> If I can achieve that I can filter signals with Timenum and the
> Barcomplete = BarIndex() < LastValue (BarIndex()) ; // code in the help
> files.
>
> First things first though.
>
> Here are my results to date.
>
> ****
> // IndicatorAlertif. afl
> // run on EURUSD (price over 1.4 since Nov 07)
>
> Plot(C, "IndicAtor Alertif Test", colorBlack, 64);
>
> Buy = 1; Sell = 0;
> AlertIf( C > 1.4, "","", 1, 1 + 2); // SHOULD GIVE AN ALERT EVERY TICK
> OR NEW PRICE FEED
>
> // Chart in 5 min, AA settings 5 min, Run Every Not checked; alert every
> 10 seconds because I get 10 seconds feed.
> // So far so good.
>
> // Chart in Hourly, AA settings 5 min, Run Every Not checked; No alerts
> with data feed or with SCAN button.
> // What does this mean? Just changing the chart to Hourly stops the
> alerts.
>
> // Chart in Hourly, AA settings 5 min, Run Every Checked to Hourly; No
> alerts with data feed, SCAN gives correct alert.
>
> // Chart in Hourly, AA settings Hourly, Run Every Checked to Hourly; No
> alerts with data feed, click SCAN >> no alerts.
> // Seems to be a conflict here.
>
> // Chart in 15 min, AA settings 15min, Run Every Not checked; No alerts
> with data feed or click of the SCAN button.
>
> // Chart in 15 min, AA settings 15min, Run Every checked to 15 min; No
> alerts with data feed or click of the SCAN button.
>
> // Chart back to 5 min, AA settings to 5 min, Run Every Not checked:
> alert every 10 seconds because I get 10 seconds feed.
> // Back to where I started : all working well.
>
> // Chart back to 5 min, AA settings to 5 min, Run Every checked to 5min:
> alert every 10 seconds because I get 10 seconds feed.
> // These settings work well.
>
> // Chart set to 5 min, AA settings to 15 min, Run Every not checked:
> alert every 10 seconds and with SCAN.
>
> // Chart set to 5 min, AA settings to 30 min, Run Every not checked:
> alert every 10 seconds and with SCAN.
>
> // Chart set to 5 min, AA settings to 30 min, Run Every set to 15 min:
> alert every 10 seconds and with SCAN.
>
> // Chart set to 5 min, AA settings to 120 min, Run Every set to 15 min:
> alert every 10 seconds and with SCAN.
>
> // Chart set to 5 min, AA settings to 5 min, Run Every not checked:
> alert every 10 seconds and with SCAN.
>
> // Chart set to 15 min, AA settings to 5 min, Run Every not checked:
> alert NOT every 10 seconds, only with click SCAN.
> // Taking the chart away from the 5 min setting throws a spanner in
> the works.
>
> // Chart set to 15 min, AA settings to 5 min, Run Every set to 15 min:
> alert NOT every 10 seconds, only with click SCAN.
>
> *****
>
> I am trying to go through this methodically to get some confidence in
> the way this works but I am struggling at present.
>
> Is there something glaringly obvious I have missed?
>
> --
> Regards
>
> ChrisB
>
>
Please note that this group is for discussion between users only.
To get support from AmiBroker please send an e-mail directly to
SUPPORT {at} amibroker.com
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
For other support material please check also:
http://www.amibroker.com/support.html
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:amibroker-digest@xxxxxxxxxxxxxxx
mailto:amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|