valueAt

valueAt, function

def pure valueAt(z: zedfunc, x: number): number

Returns the value of zedfunc z at x. Fractional x uses linear interpolation.

Example

table T = with
  [| as N |]
  [| 0 |]
  [| 0.5 |]
  [| 1 |]
  [| 1.5 |]
  [| 2 |]

a = max(constant(10) - linear(1) * linear(1), 0)

show table "valueAt(a, _)" with
  T.N
  valueAt(a, T.N)

This outputs the following table: