seaborn.JointGrid.init¶

JointGrid.__init__(self, *, x=None, y=None, data=None, height=6, ratio=5, space=0.2, dropna=False, xlim=None, ylim=None, size=None, marginal_ticks=False, hue=None, palette=None, hue_order=None, hue_norm=None)¶

Set up the grid of subplots and store data internally for easy plotting.

Parameters

x, yvectors or keys in data: Variables that specify positions on the x and y axes.
datapandas.DataFrame, numpy.ndarray, mapping, or sequence: Input data structure. Either a long-form collection of vectors that can be assigned to named variables or a wide-form dataset that will be internally reshaped.
heightnumber: Size of each side of the figure in inches (it will be square).
rationumber: Ratio of joint axes height to marginal axes height.
spacenumber: Space between the joint and marginal axes
dropnabool: If True, remove missing observations before plotting.
{x, y}limpairs of numbers: Set axis limits to these values before plotting.
marginal_ticksbool: If False, suppress ticks on the count/density axis of the marginal plots.
huevector or key in data: Semantic variable that is mapped to determine the color of plot elements. Note: unlike in FacetGrid or PairGrid, the axes-level functions must support hue to use it in JointGrid.
palettestring, list, dict, or matplotlib.colors.Colormap: Method for choosing the colors to use when mapping the hue semantic. String values are passed to color_palette(). List or dict values imply categorical mapping, while a colormap object implies numeric mapping.
hue_ordervector of strings: Specify the order of processing and plotting for categorical levels of the hue semantic.
hue_normtuple or matplotlib.colors.Normalize: Either a pair of values that set the normalization range in data units or an object that will map from data units into a [0, 1] interval. Usage implies numeric mapping.

See also

jointplot: Draw a bivariate plot with univariate marginal distributions.
PairGrid: Set up a figure with joint and marginal views on multiple variables.
jointplot: Draw multiple bivariate plots with univariate marginal distributions.

Examples

Calling the constructor initializes the figure, but it does not plot anything:

penguins = sns.load_dataset("penguins")
sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")

The simplest plotting method, JointGrid.plot() accepts a pair of functions (one for the joint axes and one for both marginal axes):

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")
g.plot(sns.scatterplot, sns.histplot)

The JointGrid.plot() function also accepts additional keyword arguments, but it passes them to both functions:

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")
g.plot(sns.scatterplot, sns.histplot, alpha=.7, edgecolor=".2", linewidth=.5)

If you need to pass different keyword arguments to each function, you’ll have to invoke JointGrid.plot_joint() and JointGrid.plot_marginals():

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")
g.plot_joint(sns.scatterplot, s=100, alpha=.5)
g.plot_marginals(sns.histplot, kde=True)

You can also set up the grid without assigning any data:

g = sns.JointGrid()

You can then plot by accessing the ax_joint, ax_marg_x, and ax_marg_y attributes, which are matplotlib.axes.Axes objects:

g = sns.JointGrid()
x, y = penguins["bill_length_mm"], penguins["bill_depth_mm"]
sns.scatterplot(x=x, y=y, ec="b", fc="none", s=100, linewidth=1.5, ax=g.ax_joint)
sns.histplot(x=x, fill=False, linewidth=2, ax=g.ax_marg_x)
sns.kdeplot(y=y, linewidth=2, ax=g.ax_marg_y)

The plotting methods can use any seaborn functions that accept x and y variables:

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")
g.plot(sns.regplot, sns.boxplot)

If the functions accept a hue variable, you can use it by assigning hue when you call the constructor:

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm", hue="species")
g.plot(sns.scatterplot, sns.histplot)

Horizontal and/or vertical reference lines can be added to the joint and/or marginal axes using :meth:JointGrid.refline:

g = sns.JointGrid(data=penguins, x="bill_length_mm", y="bill_depth_mm")
g.plot(sns.scatterplot, sns.histplot)
g.refline(x=45, y=16)

The figure will always be square (unless you resize it at the matplotlib layer), but its overall size and layout are configurable. The size is controlled by the height parameter. The relative ratio between the joint and marginal axes is controlled by ratio, and the amount of space between the plots is controlled by space:

sns.JointGrid(height=4, ratio=2, space=.05)

By default, the ticks on the density axis of the marginal plots are turned off, but this is configurable:

sns.JointGrid(marginal_ticks=True)

Limits on the two data axes (which are shared across plots) can also be defined when setting up the figure:

sns.JointGrid(xlim=(-2, 5), ylim=(0, 10))

seaborn.JointGrid.__init__¶

seaborn.JointGrid.init¶