# SpectralData

class SpectralData(val lambda: IntArray, val value: FloatArray, val mode: ScanMode = ScanMode.M2) : ISpectralData

Class describing spectral data obtained from a measurement

## Constructors

SpectralData
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constructor(lambda: IntArray, value: FloatArray, mode: ScanMode = ScanMode.M2)

## Properties

interval
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open override val interval: Int

Wavelength spacing (eg - 10 nm)

lambda
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open override val lambda: IntArray

Wavelength values. Each entry `i` in this array corresponds to a spectral value in value at the same index.

mode
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open override val mode: ScanMode

Scan mode for this measurement (one of ScanMode.M0, ScanMode.M1, or ScanMode.M2)

value
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open override val value: FloatArray

Spectral reflectance values. Each entry `i` in this array corresponds to a wavelength value in lambda at the same index.

## Functions

interpolate
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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.

toColorData
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open fun toColorData(illuminant: Illuminant = Illuminant.D50, observer: Observer = Observer.CIE1931, type: IColorData.ColorType = ColorType.CIEXYZ): IColorData?
open override fun toColorData(reference: ReferenceWhite, type: IColorData.ColorType): IColorData?

Provides color data from this measurement for the specified illuminant and observer white point. Result is `null` if an invalid white point is specified.

toColorInt
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@ColorInt
open fun toColorInt(reference: ReferenceWhite = ReferenceWhite.D50_2): Int?
@ColorInt
open fun toColorInt(illuminant: Illuminant = Illuminant.D50, observer: Observer = Observer.CIE1931): Int?

Provides an sRGB value for this measurement for the specified illuminant and observer white point. Result is `null` if an invalid white point is specified.

toDensityData
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open fun toDensityData(status: DensityStatus = DensityStatus.T): IDensityData?

Provides absolute density values for this measurement for the specified density status evaluated as per ISO 5-3:2009, or `null` if the LicenseFeature.DENSITY_DATA feature is not enabled for the current license. See also LicenseManager.Shared.isFeatureEnabled.

toRgbValue
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open fun toRgbValue(illuminant: Illuminant = Illuminant.D50, observer: Observer = Observer.CIE1931): IntArray?
open override fun toRgbValue(reference: ReferenceWhite): IntArray?

Provides an sRGB value for this measurement for the specified illuminant and observer white point. Result is `null` if an invalid white point is specified.