How to code AFL backtest to which trade should choose to enter trade from Ranking PositionScore RSI(15)>60

AFL Programming
1

Hi everyone

I try coding for backtesting as the code below. The main point in code is how to apply PositionScore. I need to apply PositionScore variable to choose which trade are prioritize on logic
PositionScore RSI(15)>60 .

I study how to use position score as this link. but not met as my requirement, I prefer the trade that PositionScore RSI(15)>60
Portfolio-level backtesting IMPORTANT: Please read first Tutorial:
In sample code
PositionScore = 100-RSI(); // prefer stocks that have low RSI;

My code is below.

PosQty = 5; // You can define here how many open positions you want
SetOption ("InitialEquity", 10000000);
SetOption ("MaxOpenPositions", PosQty);
SetOption ("MinShares", 100);
RoundLotSize=100;
SetPositionSize(100/PosQty,spsPercentOfEquity);

SetOption("CommissionMode",1);
SetOption("CommissionAmount",0.1);


//SetTradeDelays(1,1,0,0);
//SetOption( "ActivateStopsImmediately", True );

//Test MA compare to EMA

//***********************************************************
BuyPrice=Close;
SellPrice=close;

 sEMa=10;
 lEMa=50;

buyX=EMA(C, sEMa)>EMA(C, lEMa);
sellX=EMA(C,sEMa)<EMA(C,lEMa);

Buy=buyX;
Sell=sellX;

//Sell=0;
Buy = ExRem(Buy,Sell); 
Sell = ExRem(Sell,Buy);
//***********************************************************
PositionScore =  RSI(15)>60;
2 
PositionScore = 100 - valuewhen(RSI(15) > 60, RSI(15));
3

I don't yet understand completely in ValueWhen function.
however I will try it out as your post.

Primarily, my logic for ranking to choose prefered stock using RSI is below.
assuming MaxOpenPosition=2
The following stock occurs buy signal simultaneously.
stock A ,rsi=50
stock B,rsi=62
stock C rsi= 65
stock D rsi=70
stock E rsi=55
stock E rsi=61

so C (rsi=65) and D=(rsi70) are selected to trade order by RSI descending.

4

@technqvi, based on your original description, I'm not sure that you need ValueWhen(), although perhaps @Anthony is seeing something that I am not.

If you only want to take trades when the RSI is above 60, then just add that to your Buy logic, like this:

Buy=buyX AND RSI(15) > 60;

To rank your entries by the highest RSI value, use something like this:

PositionScore = RSI(15);
5

@mradtke
your answer is right as my specification.
no need to use valueWhen.
PositionScore = RSI(15); it is enought for me.

I want to take the trade if only buyx ; thus at the day, many stocks may meet as my criteria buyx (ema10>ema50 ) but RSI is still less than 60.
however, we prefer to choose the first two stocks have RSI value the most.

The following figure is shown the test result , given that MaxOpenPositions=2
Not set position score
3

set position score
2

don't set Set MaxOpenPositions
1

6

@technqvi, I can't tell from your post whether your problem is solved or if you still have a question. Since you did not mark any of the responses as the solution, I'm guessing that something still isn't working as you hoped?

7

Your post was resolved to my issue absolutely.
PositionScore = RSI(15)