Switches in function

September 29th, 2023, 09:55 AM

HI I´m trying code a function that has some switches so that I can finde the best filter.
Am I right that is a Boolean type?
I can´t get it to work, some one that knows what I´m missing here?

Input: Filter (numeric);

Switch ( Filter )
Begin
Case 0: xFilter= True;
Case 1: xFilter= Close < Average(Close, 5);
Case 2: xFilter= ADX(5) > 25;
Case 3: xFilter= (Volume > Average(Volume, 5));
End;

xFilter = True;

September 30th, 2023, 04:22 PM

You are mixing variable types; Try this:

Input: Filter (numeric); // values = 0, 1 , 2, 3, ...
Vars: xFilter(False);

Switch ( Filter )
Begin
Case 0: xFilter= True;
Case 1: xFilter= Close < Average(Close, 5);
Case 2: xFilter= ADX(5) > 25;
Case 3: xFilter= (Volume > Average(Volume, 5));
End;

Bob

October 1st, 2023, 03:12 AM

Hi Bob

Vars: xFilter(False);
I keep getting: A value was never assigned to user funtion

Do I not need a return value?
It keeps turnning of the strategy when I´m testing it...

Thomas

October 1st, 2023, 06:52 PM

Here is a simple function and strategy that you can test. The function must have a Boolean (True/False) Return Type. You will optimize the strategy with filter values varying from 0 to 3.
I think that this should work. Give it a try.

Code

{Function: NexusFi_Test_1}

Input: Filter (numeric); 
Vars: xFilter(False);

Switch ( Filter )
Begin
Case 0: xFilter= True;
Case 1: xFilter= Close < Average(Close, 5);
Case 2: xFilter= ADX(5) > 25;
Case 3: xFilter= (Volume > Average(Volume, 5));
End;

NexusFi_Test_1 = xFilter;


{Strategy: Test.NexusFi.1}

Input: Filter (1); // values = 0, 1 , 2, 3, ...
Vars: MyBoolean(False);

MyBoolean = NexusFi_Test_1(Filter);

If MyBoolean then Buy next bar at market;
If Not MyBoolean then Sell Short next bar at market;

October 3rd, 2023, 09:57 AM

Thanks TraderDoc2

Switches in function

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Switches in function