Troubleshooting - Step size doesn't work correctly

[Avyyys]

I have had problems with step size. When I have more than one parameter, for some reason I can only get the step size of the first parameter to work, but not the step size of the second parameter. Even in the first parameter it only works if I add number like "2.0", but without ".0" it doesn't work at all. However, this solution no longer applies to the second parameter, I've tried everything, but I can't get it to work in another parameter at all. It always counts every number that is between the "start" and "end". I have also tried with another browser, but it had no effect.

[Avyyys]

As an example, even if the step size is 50, it goes through each number separately. I noticed that it works fine for small numbers like "0.1" but for integers like "2", "5" or "10" it doesn't work anymore.

[AtakanPehlivanoglu]

Thanks for raising the issue @Avyyys ,

Could you please share the sample publicly available TradingView Strategy with the exact 'start' 'end' parameters that you are running? So that I can reproduce the issue on my side.

Once you share it here, I will share the details regarding the issue.

[Avyyys]

This is not the same code as in the picture, but with this strategy I have had the same problem. Often, Optipie also calculates quite a lot of extra values ​​for some reason and sometimes it has finished earlier than it should and also made an incomplete report.

In this code, I have had 2 parameters open, the values ​​of the first parameter are 5 - 30 - 2 and the values ​​of the second parameter are 50 - 250 - 10. Once I tried to add two more parameters, both of which had values ​​of 1 - 6 - 1, but then it went completely messed and kept calculating extra values.

//@Version=5
strategy(title="Double MA Strategy", shorttitle="DMA", overlay=true)

// Input for the lengths of two MAs
len1 = input.int(9, minval=1, title="Length1")
len2 = input.int(80, minval=1, title="Length2")

// Function to calculate different types of MAs
ma(source, length, type) =>
switch type
1 => ta.sma(source, length) // SMA
2 => ta.ema(source, length) // EMA
3 => ta.wma(source, length) // WMA
4 => ta.vwma(source, length) // VWMA
5 => ta.rma(source, length) // SMMA
6 => ta.hma(source, length) // HMA

// Input for the types of two MAs
type1 = input.int(title = "Type1", defval = 2, minval = 1, maxval = 6) // Default is EMA
type2 = input.int(title = "Type2", defval = 2, minval = 1, maxval = 6) // Default is EMA

// Calculation of two MAs
ma1 = ma(close, len1, type1)
ma2 = ma(close, len2, type2)

// Plotting two MAs
plot(ma1, title="MA1", color=color.blue)
plot(ma2, title="MA2", color=color.red)

// Conditions for entry and exit signals
buySignal = ta.crossover(ma1, ma2)
sellSignal = ta.crossunder(ma1, ma2)

// Using strategy.entry and strategy.close for signals
if (buySignal)
strategy.entry("Buy", strategy.long)
if (sellSignal)
strategy.entry("Sell", strategy.short)

// Closing positions
strategy.close("Close Long Position", when = sellSignal)
strategy.close("Close Short Position", when = buySignal)

[AtakanPehlivanoglu]

Hey @Avyyys

I have just checked that out and problem is that your OptiPie Step Size should always match Pinescript Step Size for the given input 'X'.

I have set 'step size' values explicitly for the first 2 inputs like this:

// Input for the lengths of two MAs
len1 = input.int(9, minval=1, title="Length1", step = 2)
len2 = input.int(80, minval=1, title="Length2", step = 10)

To match the step sizes which you set for OptiPie.

You can find the sample optimization report for this strategy, for BTCUSD

report-1703197950317.csv

Please let me know if you have further questions.

[AtakanPehlivanoglu]

Apparently that is a quite common issue that has been raised here multiple times so that to mitigate this problem I will add this solution to FAQs