Sequential schemes topic

Sequential color schemes are available as continuous interpolators (often used with ScaleSequential) and as discrete schemes (often used with ScaleOrdinal).

Each discrete scheme, such as schemeBlues, is represented as an array of arrays of hexadecimal color strings. The kth element of this array contains the color scheme of size k; for example, schemeBlues[9] contains an array of nine strings representing the nine colors of the blue sequential color scheme. Sequential color schemes support a size k ranging from 3 to 9.

To create a sequential discrete nine-color scale using the Blues color scheme:

final color = ScaleOrdinal(range: schemeBlues[9]);

To create a sequential continuous color scale using the Blues color scheme:

final color = ScaleSequential(interpolator: interpolateBlues);

Properties

schemeBlues → List<List<String>?>

The “Blues” discrete sequential color scheme of size k in 3–9.

final

schemeBuGn → List<List<String>?>

The “BuGn” discrete sequential color scheme of size k in 3–9.

final

schemeBuPu → List<List<String>?>

The “BuPu” discrete sequential color scheme of size k in 3–9.

final

schemeGnBu → List<List<String>?>

The “GnBu” discrete sequential color scheme of size k in 3–9.

final

schemeGreens → List<List<String>?>

The “Greens” discrete sequential color scheme of size k in 3–9.

final

schemeGreys → List<List<String>?>

The “Greys” discrete sequential color scheme of size k in 3–9.

final

schemeOranges → List<List<String>?>

The “Oranges” discrete sequential color scheme of size k in 3–9.

final

schemeOrRd → List<List<String>?>

The “OrRd” discrete sequential color scheme of size k in 3–9.

final

schemePuBu → List<List<String>?>

The “PuBu” discrete sequential color scheme of size k in 3–9.

final

schemePuBuGn → List<List<String>?>

The “PuBuGn” discrete sequential color scheme of size k in 3–9.

final

schemePuRd → List<List<String>?>

The “PuRd” discrete sequential color scheme of size k in 3–9.

final

schemePurples → List<List<String>?>

The “Purples” discrete sequential color scheme of size k in 3–9.

final

schemeRdPu → List<List<String>?>

The “RdPu” discrete sequential color scheme of size k in 3–9.

final

schemeReds → List<List<String>?>

The “Reds” discrete sequential color scheme of size k in 3–9.

final

schemeYlGn → List<List<String>?>

The “YlGn” discrete sequential color scheme of size k in 3–9.

final

schemeYlGnBu → List<List<String>?>

The “YlGnBu” discrete sequential color scheme of size k in 3–9.

final

schemeYlOrBr → List<List<String>?>

The “YlOrBr” discrete sequential color scheme of size k in 3–9.

final

schemeYlOrRd → List<List<String>?>

The “YlOrRd” discrete sequential color scheme of size k in 3–9.

final

Functions

interpolateBlues(num t) → String

Given a number t in the range [0,1], returns the corresponding color from the “Blues” sequential color scheme represented as an RGB string.

interpolateBuGn(num t) → String

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

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

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

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

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

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

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

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

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

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

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

Given a number t in the range [0,1], returns the corresponding color from the “OrRd” sequential color scheme represented as an RGB string.

interpolatePlasma(num t) → String

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.

interpolatePuBu(num t) → String

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

Given a number t in the range [0,1], returns the corresponding color from the “PuBuGn” sequential color scheme represented as an RGB string.

interpolatePuRd(num t) → String

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

Given a number t in the range [0,1], returns the corresponding color from the "Purples" sequential color scheme represented as an RGB string.

interpolateRdPu(num t) → String

Given a number t in the range [0,1], returns the corresponding color from the “RdPu” sequential color scheme represented as an RGB string.

interpolateReds(num t) → String

Given a number t in the range [0,1], returns the corresponding color from the "Reds" sequential color scheme represented as an RGB string.

interpolateTurbo(num t) → String

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

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

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

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

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

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

Given a number t in the range [0,1], returns the corresponding color from the “YlOrRd” sequential color scheme represented as an RGB string.