geom_contourf ¶

geom_contourf(
    mapping: FeatureSpec | None = None,
    *,
    data: PlotData | None = None,
    stat: str | None = None,
    position: Position | None = None,
    show_legend: bool | None = None,
    inherit_aes: bool | None = None,
    manual_key: ManualKey | None = None,
    sampling: Sampling | None = None,
    tooltips: Tooltips | None = None,
    bins: int | None = None,
    binwidth: float | None = None,
    color_by: str | None = None,
    fill_by: str | None = None,
    na_rm: bool | None = None,
    **other_args: Any,
) -> LayerSpec

Fill the bands between the contour lines of z (stat="contourf").

The rows give z at grid nodes, in any order; a missing node leaves a hole. The stat computes ..level..: the z minimum for the lowest band, the z maximum for the highest, and the mean of its two lines for the others. Bands fill by ..level.. by default, as in ggplot2 (lets_plot draws them all in one blue); pass a constant fill for one color.

Parameters:

mapping (FeatureSpec, default: None ) –

Aesthetic mapping from aes(): x, y, z (required), fill, color, alpha, size, linetype.
data (DataFrame or dict, default: None ) –

Layer data; inherits the plot data when None.
stat (str, default: None ) –

Statistical transformation, by name; "contourf" when None.
position (str or FeatureSpec, default: None ) –

Position adjustment: a name such as "identity" or a position_*() spec.
show_legend (bool, default: None ) –

False hides this layer from the legend.
inherit_aes (bool, default: None ) –

False ignores the plot's default mapping for this layer.
manual_key (str or FeatureSpec, default: None ) –

This layer's key in a manual legend: a label, or layer_key().
sampling (str or FeatureSpec, default: None ) –

lets_plot sampling; accepted and ignored, as ggrust draws every row.
tooltips (FeatureSpec or list of str, default: None ) –

Tooltip content: layer_tooltips(), a list of column names, or "none" to disable tooltips (HTML output).
bins (int, default: 10 ) –

Number of levels, evenly spaced over the z range.
binwidth (float, default: None ) –

Distance between levels; wins over bins.
color_by (str, default: None ) –

Aesthetic the color scale applies to ("color" or "fill").
fill_by (str, default: None ) –

Aesthetic the fill scale applies to ("fill" or "color").
na_rm (bool, default: None ) –

True removes rows with missing values silently; otherwise they are removed with a warning.
**other_args (Any) –

Constant aesthetics such as fill="steelblue" or alpha=0.5.

Returns:

LayerSpec –

The layer.

Examples:

>>> from ggrust import *
>>> import numpy as np
>>> x, y = np.meshgrid(np.linspace(-2, 2, 40), np.linspace(-2, 2, 40))
>>> data = {"x": x.ravel(), "y": y.ravel(), "z": np.exp(-(x**2 + y**2)).ravel()}
>>> plot = ggplot(data, aes("x", "y", z="z")) + geom_contourf()