Dukascopy Support Board • View topic - When does setInputParameter() being called?

tcsabina

Dear Support,

I would like to understand when do we call the setInputParameter() function of the attached indicator. It is based on the first indicator example in the wiki (https://www.dukascopy.com/wiki/#Simple_Indicator). I`ve only added some logging statements in the corresponding function.

Could you explain who is calling setInputParameter()? And what does the parameter `array` contains? It looks like tick data (especially BID price), but why does the array contain different amount of elements?

Thanks in advance.

API Support

tcsabina wrote:

Could you explain who is calling setInputParameter()?

The platform.

tcsabina wrote:

And what does the parameter `array` contains?

It depends on what you have defined in your InputParameterInfo.

tcsabina wrote:

It looks like tick data (especially BID price), but why does the array contain different amount of elements?

The array size depends on internal workings of the platform, your indicator calculation should calculate regardless of the passed input amount. However, if you require specific minimal amount of inputs, then you need to increase the getLookback().

tcsabina

Thanks for clarifying this.