d4_scale_chromatic library

This package provides sequential, diverging and categorical color schemes designed to work with d4_scale’s ScaleOrdinal and ScaleSequential.

Most of these schemes are derived from Cynthia A. Brewer’s ColorBrewer. Since ColorBrewer publishes only discrete color schemes, the sequential and diverging scales are interpolated using uniform B-splines.

Properties

schemeAccent → List<String> Categorical schemes
An list of eight categorical colors represented as RGB hexadecimal strings.
final
schemeBlues → List<List<String>?> Sequential schemes
The “Blues” discrete sequential color scheme of size k in 3–9.
final
schemeBrBG → List<List<String>?> Diverging schemes
The “BrBG” discrete diverging color scheme of size k in 3–11.
final
schemeBuGn → List<List<String>?> Sequential schemes
The “BuGn” discrete sequential color scheme of size k in 3–9.
final
schemeBuPu → List<List<String>?> Sequential schemes
The “BuPu” discrete sequential color scheme of size k in 3–9.
final
schemeCategory10 → List<String> Categorical schemes
An list of ten categorical colors represented as RGB hexadecimal strings.
final
schemeDark2 → List<String> Categorical schemes
An list of eight categorical colors represented as RGB hexadecimal strings.
final
schemeGnBu → List<List<String>?> Sequential schemes
The “GnBu” discrete sequential color scheme of size k in 3–9.
final
schemeGreens → List<List<String>?> Sequential schemes
The “Greens” discrete sequential color scheme of size k in 3–9.
final
schemeGreys → List<List<String>?> Sequential schemes
The “Greys” discrete sequential color scheme of size k in 3–9.
final
schemeOranges → List<List<String>?> Sequential schemes
The “Oranges” discrete sequential color scheme of size k in 3–9.
final
schemeOrRd → List<List<String>?> Sequential schemes
The “OrRd” discrete sequential color scheme of size k in 3–9.
final
schemePaired → List<String> Categorical schemes
An list of twelve categorical colors represented as RGB hexadecimal strings.
final
schemePastel1 → List<String> Categorical schemes
An list of nine categorical colors represented as RGB hexadecimal strings.
final
schemePastel2 → List<String> Categorical schemes
An list of eight categorical colors represented as RGB hexadecimal strings.
final
schemePiYG → List<List<String>?> Diverging schemes
The “PiYG” discrete diverging color scheme of size k in 3–11.
final
schemePRGn → List<List<String>?> Diverging schemes
The “PRGn” discrete diverging color scheme of size k in 3–11.
final
schemePuBu → List<List<String>?> Sequential schemes
The “PuBu” discrete sequential color scheme of size k in 3–9.
final
schemePuBuGn → List<List<String>?> Sequential schemes
The “PuBuGn” discrete sequential color scheme of size k in 3–9.
final
schemePuOr → List<List<String>?> Diverging schemes
The “PuOr” discrete diverging color scheme of size k in 3–11.
final
schemePuRd → List<List<String>?> Sequential schemes
The “PuRd” discrete sequential color scheme of size k in 3–9.
final
schemePurples → List<List<String>?> Sequential schemes
The “Purples” discrete sequential color scheme of size k in 3–9.
final
schemeRdBu → List<List<String>?> Diverging schemes
The “RdBu” discrete diverging color scheme of size k in 3–11.
final
schemeRdGy → List<List<String>?> Diverging schemes
The “RdGy” discrete diverging color scheme of size k in 3–11.
final
schemeRdPu → List<List<String>?> Sequential schemes
The “RdPu” discrete sequential color scheme of size k in 3–9.
final
schemeRdYlBu → List<List<String>?> Diverging schemes
The “RdYlBu” discrete diverging color scheme of size k in 3–11.
final
schemeRdYlGn → List<List<String>?> Diverging schemes
The “RdYlGn” discrete diverging color scheme of size k in 3–11.
final
schemeReds → List<List<String>?> Sequential schemes
The “Reds” discrete sequential color scheme of size k in 3–9.
final
schemeSet1 → List<String> Categorical schemes
An list of nine categorical colors represented as RGB hexadecimal strings.
final
schemeSet2 → List<String> Categorical schemes
An list of eight categorical colors represented as RGB hexadecimal strings.
final
schemeSet3 → List<String> Categorical schemes
An list of twelve categorical colors represented as RGB hexadecimal strings.
final
schemeSpectral → List<List<String>?> Diverging schemes
The “Spectral” discrete diverging color scheme of size k in 3–11.
final
schemeTableau10 → List<String> Categorical schemes
An list of ten categorical colors authored by Tableau as part of Tableau 10 represented as RGB hexadecimal strings.
final
schemeYlGn → List<List<String>?> Sequential schemes
The “YlGn” discrete sequential color scheme of size k in 3–9.
final
schemeYlGnBu → List<List<String>?> Sequential schemes
The “YlGnBu” discrete sequential color scheme of size k in 3–9.
final
schemeYlOrBr → List<List<String>?> Sequential schemes
The “YlOrBr” discrete sequential color scheme of size k in 3–9.
final
schemeYlOrRd → List<List<String>?> Sequential schemes
The “YlOrRd” discrete sequential color scheme of size k in 3–9.
final

Functions

interpolateBlues(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “Blues” sequential color scheme represented as an RGB string.
interpolateBrBG(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “BrBG” diverging color scheme represented as an RGB string.
interpolateBuGn(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “BuGn” sequential color scheme represented as an RGB string.
interpolateBuPu(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “BuPu” sequential color scheme represented as an RGB string.
interpolateCividis(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “cividis” color vision deficiency-optimized color scheme designed by Nuñez, Anderton, and Renslow, represented as an RGB string.
interpolateCool(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from Niccoli’s perceptual rainbow, represented as an RGB string.
interpolateCubehelixDefault(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from Green’s default Cubehelix represented as an RGB string.
interpolateGnBu(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “GnBu” sequential color scheme represented as an RGB string.
interpolateGreens(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the "Greens" sequential color scheme represented as an RGB string.
interpolateGreys(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the "Greys" sequential color scheme represented as an RGB string.
interpolateInferno(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “inferno” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib, represented as an RGB string.
interpolateMagma(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “magma” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib, represented as an RGB string.
interpolateOranges(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the "Oranges" sequential color scheme represented as an RGB string.
interpolateOrRd(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “OrRd” sequential color scheme represented as an RGB string.
interpolatePiYG(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “PiYG” diverging color scheme represented as an RGB string.
interpolatePlasma(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “plasma” perceptually-uniform color scheme designed by van der Walt and Smith for matplotlib, represented as an RGB string.
interpolatePRGn(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “PRGn” diverging color scheme represented as an RGB string.
interpolatePuBu(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “PuBu” sequential color scheme represented as an RGB string.
interpolatePuBuGn(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “PuBuGn” sequential color scheme represented as an RGB string.
interpolatePuOr(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “PuOr” diverging color scheme represented as an RGB string.
interpolatePuRd(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “PuRd” sequential color scheme represented as an RGB string.
interpolatePurples(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the "Purples" sequential color scheme represented as an RGB string.
interpolateRainbow(num t) → String Cyclical schemes
Given a number t in the range [0,1], returns the corresponding color from interpolateWarm scale from [0.0, 0.5] followed by the interpolateCool scale from [0.5, 1.0], thus implementing the cyclical less-angry rainbow color scheme.
interpolateRdBu(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “RdBu” diverging color scheme represented as an RGB string.
interpolateRdGy(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “RdGy” diverging color scheme represented as an RGB string.
interpolateRdPu(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “RdPu” sequential color scheme represented as an RGB string.
interpolateRdYlBu(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “RdYlBu” diverging color scheme represented as an RGB string.
interpolateRdYlGn(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “RdYlGn” diverging color scheme represented as an RGB string.
interpolateReds(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the "Reds" sequential color scheme represented as an RGB string.
interpolateSinebow(num t) → String Cyclical schemes
Given a number t in the range [0,1], returns the corresponding color from the “sinebow” color scheme by Jim Bumgardner and Charlie Loyd.
interpolateSpectral(num t) → String Diverging schemes
Given a number t in the range [0,1], returns the corresponding color from the “Spectral” diverging color scheme represented as an RGB string.
interpolateTurbo(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “turbo” color scheme by Anton Mikhailov.
interpolateViridis(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “viridis” perceptually-uniform color scheme designed by van der Walt, Smith and Firing for matplotlib, represented as an RGB string.
interpolateWarm(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from a 180° rotation of Niccoli’s perceptual rainbow, represented as an RGB string.
interpolateYlGn(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “YlGn” sequential color scheme represented as an RGB string.
interpolateYlGnBu(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “YlGnBu” sequential color scheme represented as an RGB string.
interpolateYlOrBr(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “YlOrBr” sequential color scheme represented as an RGB string.
interpolateYlOrRd(num t) → String Sequential schemes
Given a number t in the range [0,1], returns the corresponding color from the “YlOrRd” sequential color scheme represented as an RGB string.