Diverging schemes topic

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

Each discrete scheme, such as schemeBrBG, is represented as an list of lists of hexadecimal color strings. The kth element of this list contains the color scheme of size k; for example, schemeBrBG[9] contains an list of nine strings representing the nine colors of the brown-blue-green diverging color scheme. Diverging color schemes support a size k ranging from 3 to 11.

To create a diverging continuous color scale using the PiYG color scheme:

final color = ScaleSequential(interpolator: interpolatePiYG);

To create a diverging discrete nine-color scale using the PiYG color scheme:

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

Properties

schemeBrBG → List<List<String>?> Diverging schemes
The “BrBG” discrete diverging color scheme of size k in 3–11.
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
schemePuOr → List<List<String>?> Diverging schemes
The “PuOr” discrete diverging color scheme of size k in 3–11.
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
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
schemeSpectral → List<List<String>?> Diverging schemes
The “Spectral” discrete diverging color scheme of size k in 3–11.
final

Functions

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.
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.
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.
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.
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.
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.
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.