na - PineScript Variable

na

Overview

A keyword signifying “not available”, indicating that a variable has no assigned value.

Type

na

Qualifier

simple

Examples

Example 1

//@version=6indicator("na")// CORRECT// Plot no value when on bars zero to nine. Plot `close` on other bars.plot(bar_index < 10 ? na : close)// CORRECT ALTERNATIVE// Initialize `a` to `na`. Reassign `close` to `a` on bars 10 and later.float a = naif bar_index >= 10    a := closeplot(a)// INCORRECT// Trying to test the preceding bar's `close` for `na`.// The next line, if uncommented, will cause a compilation error, because direct comparison with `na` is not allowed.// plot(close[1] == na ? close : close[1])// CORRECT// Use the `na()` function to test for `na`.plot(na(close[1]) ? close : close[1])// CORRECT ALTERNATIVE// `nz()` tests `close[1]` for `na`. It returns `close[1]` if it is not `na`, and `close` if it is.plot(nz(close[1], close))

Remarks

• Do not use this variable with comparison operators to test values for na, as it might lead to unexpected behavior. Instead, use the na function. Note that na can be used to initialize variables when the initialization statement also specifies the variable’s type.

See Also

• na
• nz
• fixnan