Add canvas margin

Margin allows you to add white space around the whole plot. This is helpful when you plot get clipped during saving.

import numpy as np
import marsilea as ma

from matplotlib.patches import Rectangle

data = np.random.randint(0, 10, (10, 10))

h = ma.Heatmap(data, width=1, height=1)
h.set_margin(0.1)
h.render()
_ = h.figure.add_artist(Rectangle((0, 0), 1, 1, ec="g", fc="none", lw=1))

You can control the margin using the margin parameter.

h = ma.Heatmap(data, width=1, height=1)
h.set_margin(1)
h.render()
_ = h.figure.add_artist(Rectangle((0, 0), 1, 1, ec="g", fc="none", lw=1))