math.sign

The sign of number: -1 for a negative number and 1 for a positive one. The result is a float, not an int. Every other member that reduces a number to a whole value - math.ceil, math.floor, the one-argument math.round - returns an int, so this one is worth reading twice.

math.sign(const float number) → const float

math.sign(input float number) → input float

math.sign(series float number) → series float

math.sign(simple float number) → simple float

Returns const float or input float or series float or simple float — A float in the argument’s form.

indicator("Sign of the body")
plot(math.sign(close - open))

See also math.abs · math.acos · math.asin

Part of the function index.