Schemes¶

Color scheme helpers — Gradient, continuous_palette.

Ferrum — a statistical visualization library with a Rust core.

Gradient `module-attribute` ¶

Gradient = _Gradient

continuous_palette(name: str)

Look up a built-in continuous colormap by name.

Parameters:

Name	Type	Description	Default
`name`	`str`	Built-in continuous colormap name (e.g. `"viridis"`, `"plasma"`, `"magma"`, `"inferno"`, `"cividis"`, `"blues"`, `"rdbu"`). See `continuous_palette.list()` for the full set.	required

Returns:

Type	Description
`ContinuousScheme`	A ferrum continuous scheme suitable for `Color(scale=...)`.

Raises:

Type	Description
`ValueError`	If `name` is not one of the built-in colormaps.

Examples:

>>> import ferrum as fm
>>> scheme = fm.continuous_palette("viridis")
>>> fm.Chart(df).encode(x="x", y="y", color=fm.Color("val", scale=scheme))