# interpolate

open override fun interpolate(lT: Float): Float

Provides an interpolated reflectance value at a specified wavelength value using natural cubic spines. The cubic splines are evaluated at the points specified by lambda and value. Interpolated values are evaluated using natural cubic splines.

#### Return

interpolated reflectance value at lT

#### Parameters

lT

Wavelength (nm) at which to query the interpolated reflectance