Pine Script : number of bars in a series returned by the security function?

Question

To get the number of bars for the current ticker and timeframe (resolution) you use the built-in bar_index (pinescript version 4) or n but how do you get the number of bars when using the security function to retrieve a series?

question from:https://stackoverflow.com/questions/65870573/pine-script-number-of-bars-in-a-series-returned-by-the-security-function

Answer 1

//@version=4
study("My Script", overlay=true)

bar_index_weekly = security(syminfo.tickerid, "W", bar_index)

plot(bar_index_weekly, "bar_index_weekly")
plot(bar_index, "bar_index_current_timeframe")