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So, just above but function Prepare line, but after the end of the Init function, let's add the following: Good Job! If you had been following closely, the complete source code should look something like this sample file download in zip format. If we need 10 ticks, or 10 bars of data, then we cannot calculate anything until period is greater than or equal to Here are some more links to help you on your way: Bar, name. Next steps would be to write an Automated Strategy that generates trade signals from your custom indicator when the lines cross or whenever you want!
The Prepare Function Now we only need to write the Prepare function, where we actually use the configuration we just defined to set up our instance, and then we write the number crunching part when the price changes. This is done through data streams. Then, by differencing them, we have now calculated one of the three output streams we need!
How to Get Started With FXCM Trading Station Indicator and Systems Development
If we define the streams inside a function then we cannot access them outside. Conclusion And there we have it — our very own custom indicator, in this case an oscillator under the price chart. Two minus signs, —, represents a comment which has no impact on the source of the indicator but is useful to add comments or notes into code. Prerequisites But first, if you want to do this yourself then you'll need the following prerequisites: Today just to show you how easy it is we are going to re-create, from scratch, a simple implementation of the famous MACD oscillator indicator together. So, let's move on! For the purpose of this example I'm going to ignore mode, and describe period as simply being an instance in time.