long term portfolio backtesting with many symbols

Hello all,

I am experimenting with portfolio backtester.

I have some symbols that are newer and some that are older. If a symbol isn't trader yet but I have it in the backtester and use its close value in a calculation then I assume it will fubar with a division by zero or something.

I came from Thinkscript on ToS. When I have a variable that is "Not a Number" for part of the calculation then I can scrub that data by saying

def variable1 = close("ticker")
def clean_variable1 = if isnan(variable1) then clean_varibale1 = 1 else clean_variable1 = variable1;

is this type of coding applicable in Powerlanguage?

thanks

Hello joebone,

If there is no data for a symbol yet, then that won't be possible to run any code over it in your Portfolio.