smpl.plot.subplot

smpl.plot.subplot(*args, **kwargs)

Add an Axes to the current figure or retrieve an existing Axes.

This is a wrapper of .Figure.add_subplot which provides additional behavior when working with the implicit API (see the notes section).

Call signatures:

subplot(nrows, ncols, index, **kwargs)
subplot(pos, **kwargs)
subplot(**kwargs)
subplot(ax)

Parameters

args : int, (int, int, *index), or .SubplotSpec, default: (1, 1, 1)

The position of the subplot described by one of

• Three integers (nrows, ncols, index). The subplot will take the index position on a grid with nrows rows and ncols columns. index starts at 1 in the upper left corner and increases to the right. index can also be a two-tuple specifying the (first, last) indices (1-based, and including last) of the subplot, e.g., fig.add_subplot(3, 1, (1, 2)) makes a subplot that spans the upper 2/3 of the figure.

• A 3-digit integer. The digits are interpreted as if given separately as three single-digit integers, i.e. fig.add_subplot(235) is the same as fig.add_subplot(2, 3, 5). Note that this can only be used if there are no more than 9 subplots.

• A .SubplotSpec.

projection{None, ‘aitoff’, ‘hammer’, ‘lambert’, ‘mollweide’, ‘polar’, ‘rectilinear’, str}, optional

The projection type of the subplot (~.axes.Axes). str is the name of a custom projection, see ~matplotlib.projections. The default None results in a ‘rectilinear’ projection.

polarbool, default: False

If True, equivalent to projection=’polar’.

sharex, sharey~.axes.Axes, optional

Share the x or y ~matplotlib.axis with sharex and/or sharey. The axis will have the same limits, ticks, and scale as the axis of the shared axes.

labelstr

A label for the returned axes.

Returns

.axes.SubplotBase, or another subclass of ~.axes.Axes

The axes of the subplot. The returned axes base class depends on the projection used. It is ~.axes.Axes if rectilinear projection is used and .projections.polar.PolarAxes if polar projection is used. The returned axes is then a subplot subclass of the base class.

Other Parameters

**kwargs

This method also takes the keyword arguments for the returned axes base class; except for the figure argument. The keyword arguments for the rectilinear base class ~.axes.Axes can be found in the following table but there might also be other keyword arguments if another projection is used.

Properties: adjustable: {‘box’, ‘datalim’} agg_filter: a filter function, which takes a (m, n, 3) float array and a dpi value, and returns a (m, n, 3) array and two offsets from the bottom left corner of the image alpha: scalar or None anchor: (float, float) or {‘C’, ‘SW’, ‘S’, ‘SE’, ‘E’, ‘NE’, …} animated: bool aspect: {‘auto’, ‘equal’} or float autoscale_on: bool autoscalex_on: unknown autoscaley_on: unknown axes_locator: Callable[[Axes, Renderer], Bbox] axisbelow: bool or ‘line’ box_aspect: float or None clip_box: .Bbox clip_on: bool clip_path: Patch or (Path, Transform) or None facecolor or fc: color figure: .Figure frame_on: bool gid: str in_layout: bool label: object mouseover: bool navigate: bool navigate_mode: unknown path_effects: .AbstractPathEffect picker: None or bool or float or callable position: [left, bottom, width, height] or ~matplotlib.transforms.Bbox prop_cycle: unknown rasterization_zorder: float or None rasterized: bool sketch_params: (scale: float, length: float, randomness: float) snap: bool or None title: str transform: .Transform url: str visible: bool xbound: unknown xlabel: str xlim: (bottom: float, top: float) xmargin: float greater than -0.5 xscale: unknown xticklabels: unknown xticks: unknown ybound: unknown ylabel: str ylim: (bottom: float, top: float) ymargin: float greater than -0.5 yscale: unknown yticklabels: unknown yticks: unknown zorder: float

Notes

Creating a new Axes will delete any preexisting Axes that overlaps with it beyond sharing a boundary:

import matplotlib.pyplot as plt
# plot a line, implicitly creating a subplot(111)
plt.plot([1, 2, 3])
# now create a subplot which represents the top plot of a grid
# with 2 rows and 1 column. Since this subplot will overlap the
# first, the plot (and its axes) previously created, will be removed
plt.subplot(211)

If you do not want this behavior, use the .Figure.add_subplot method or the .pyplot.axes function instead.

If no kwargs are passed and there exists an Axes in the location specified by args then that Axes will be returned rather than a new Axes being created.

If kwargs are passed and there exists an Axes in the location specified by args, the projection type is the same, and the kwargs match with the existing Axes, then the existing Axes is returned. Otherwise a new Axes is created with the specified parameters. We save a reference to the kwargs which we use for this comparison. If any of the values in kwargs are mutable we will not detect the case where they are mutated. In these cases we suggest using .Figure.add_subplot and the explicit Axes API rather than the implicit pyplot API.

See Also

.Figure.add_subplot .pyplot.subplots .pyplot.axes .Figure.subplots

Examples

plt.subplot(221)

# equivalent but more general
ax1 = plt.subplot(2, 2, 1)

# add a subplot with no frame
ax2 = plt.subplot(222, frameon=False)

# add a polar subplot
plt.subplot(223, projection='polar')

# add a red subplot that shares the x-axis with ax1
plt.subplot(224, sharex=ax1, facecolor='red')

# delete ax2 from the figure
plt.delaxes(ax2)

# add ax2 to the figure again
plt.subplot(ax2)

# make the first axes "current" again
plt.subplot(221)