CS2302

error A history offset must be a whole number of 0 or more.

#What it means

The number inside [ ] after a series is how many bars back to look. It must be a whole number (int) of 0 or more.

#Typical cause

• A negative offset such as close[-1]: future bars cannot be read.
• A fractional or float offset such as close[1.5].

#How to fix it

Use a whole number of 0 or more. Convert a float with int(x). See Execution model.

#Example

//@chartscript 1
indicator("Change")
plot(close - close[-1])

Fixed

//@chartscript 1
indicator("Change")
plot(close - close[1])

#Related

• CS5201 — A history offset cannot be negative or na (got offset).
• CS5202 — name[...] reached offset bars back; raise max_bars_back to suggest in indicator().
• CS3005 — max_bars_back must be between min and max.