Dear Jforex Contest participants,

We would like to present our new strategy contest rules that we are planning to adopt starting from May. You are free to download the rules and leave your comments and feedbacks right here on the forum.

The changes in the rules can be considered revolutionary. The strategies will be uploaded by participants right from the web-site, no need to have a platform. All strategies will be running non-stop on the remote server. The strategy contest will become part of the Dukascopy Forex community and the participants will have their own strategy blogs with trades, comments, ratings and etc. The strategy popularity will become one of key evaluations along with Dukascopy's expert evaluation. All descriptions are available in the file!

I like how Dukascopy keeps improving these contests. These new rules will certainly make many of us head back to the IDE and write new contest strategy codes.

I have a question though. Just so I can make my codes cleaner and easier to understand, can I use the JFUtil open source library? It can also save a lot of boilerplate copy and paste for everyone too.

We wouldn't mind but you're not able to use external libraries on the remote server.

What about custom indicators ? Is it possible to use them on the remote server..?

Thanks,
chriz

I would preffer to use custom indicators also.
I try to use modern methods in trading other than the archaic RSI oversold/bought or MA crosses.
I would also like to be able to trade 2 different instruments at a time. This will open many nice trading methods to be implemented and tested. For example using correlation, divergence, Hilbert transform and hedging.

Thank you,

Custom indicator can run on the remote server, but you need to make the implementation right in the same strategy file.

Could you please provide clear example of such code (strategy implementing an indicator)?

The example file is attached.

Great job, looking forward to it.

Hi Support,

thanks for the example. One additional question. Although the calculation statement in the onBar method works fine, when trying to access CustomIndicator in the onStart method already, it produces following null pointer error.

BTW, in case there is a separate class file CustomIndicator.jfx or when accessing one of the standard indicators, it does not produce this error. Any idea what is going wrong?

public void onStart(IContext context) throws JFException {
   ...
   indicators.registerCustomIndicator(CustomIndicator.class);    
[color=#FF0000]   indicator = indicators.getIndicator("CustomIndicator");[/color]
...   
}

public void onBar(Instrument instrument, Period period, IBar askbar, IBar bidbar) throws JFException {
   ...
   Object[] myIndicator = this.indicators.calculateIndicator(instrument, period, new OfferSide[] {OfferSide.BID}, "CustomIndicator",
                                        new IIndicators.AppliedPrice[] {appliedPrice}, new Object[]{20}, indicatorFilter, 1, timeStamp, 0);
   ...
}

SEVERE Exception thrown whiler running onStart method: null java.lang.NullPointerException
at jforex.BBSMA_apr.onStart(BBSMA_apr.java:55)
at com.dukascopy.api.impl.execution.s.call(Unknown Source)
at com.dukascopy.api.impl.connect.an.a(Unknown Source)
at com.dukascopy.api.impl.connect.v.call(Unknown Source)
at com.dukascopy.api.impl.connect.v.call(Unknown Source)
at com.dukascopy.api.impl.execution.i.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at com.dukascopy.api.impl.execution.e$a.f(Unknown Source)
at com.dukascopy.api.impl.execution.e$a.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Thanks for feedback. Seems, there is a little problem in the platform's API. We will include the fix in the next release.

How does Dukascopy intend on tracking blog visitors? I would presume this would simply be a simple tracking script?

We track the number of visits of Dukascopy Community members but only from unique IP addresses.