Name

lookupcurve — Return the interpolation of a value along a curve.

Syntax

lookupcurve(curve, offset)
              

The LOOKUPCURVE function has the following arguments:

curve

The curve for which the value is to be calculated.

number

The X-value for which to fnd the first corresponding Y-value.

Description

Return the interpolation of a value along a curve. The first argument is the curve used in the lookup. The second argument is the X value that will be used as an index into the curve. The resulting Y value is returned.

The usual Patchworks rules for interpolation and extrapolation are used.

Examples

Formula

Description

Result

lookupcurve(curve(0,0, 100,100, 200,0), 110)

Return the Y-value at 110 along the curve.90.0