A group’s own shared x/y labels

fig.group() takes supxlabel/supylabel – the group-scoped equivalent of supxlabel()/supylabel(), for a cluster of panels that all share one x/y quantity so no individual axes needs its own set_xlabel/set_ylabel repeated on every one of them. Unlike title, which title_position can place on any of the four sides, these always draw at one fixed edge – supxlabel centered along the bottom, supylabel centered along the left, rotated – the same fixed placement the figure-level versions use. The difference is where: these draw inside the box, between its border and its member axes, rather than outside the whole grid – the box grows to make room for them (the same way it already grows for pad), rather than shrinking any axes to fit.

Four panels below all plot the same two quantities – no panel needs its own “elapsed time (s)”/”amplitude” label repeated four times.

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import numpy as np
import plotpress

rng = np.random.default_rng(3)
t = np.linspace(0, 8, 300)

fig, axes = plotpress.subplots(2, 2, figsize=(8, 6.5))
for i, ax in enumerate(axes.ravel()):
    freq = 0.6 + 0.3 * i
    ax.plot(t, np.sin(freq * t) * np.exp(-0.08 * t)
            + 0.02 * rng.standard_normal(t.size))
    ax.set_title(f"sensor {i}", fontsize=10)

fig.group("Damped response, four sensors", list(axes.ravel()), color="#2b6f4f",
         supxlabel="elapsed time (s)", supylabel="amplitude")
fig.tight_layout()