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axes_grid example code: simple_anchored_artists.pyΒΆ

(Source code, png, hires.png, pdf)

../../_images/simple_anchored_artists.png
import matplotlib.pyplot as plt


def draw_text(ax):
    from mpl_toolkits.axes_grid1.anchored_artists import AnchoredText
    at = AnchoredText("Figure 1a",
                      loc=2, prop=dict(size=8), frameon=True,
                      )
    at.patch.set_boxstyle("round,pad=0.,rounding_size=0.2")
    ax.add_artist(at)

    at2 = AnchoredText("Figure 1(b)",
                       loc=3, prop=dict(size=8), frameon=True,
                       bbox_to_anchor=(0., 1.),
                       bbox_transform=ax.transAxes
                       )
    at2.patch.set_boxstyle("round,pad=0.,rounding_size=0.2")
    ax.add_artist(at2)


def draw_circle(ax):  # circle in the canvas coordinate
    from mpl_toolkits.axes_grid1.anchored_artists import AnchoredDrawingArea
    from matplotlib.patches import Circle
    ada = AnchoredDrawingArea(20, 20, 0, 0,
                              loc=1, pad=0., frameon=False)
    p = Circle((10, 10), 10)
    ada.da.add_artist(p)
    ax.add_artist(ada)


def draw_ellipse(ax):
    from mpl_toolkits.axes_grid1.anchored_artists import AnchoredEllipse
    # draw an ellipse of width=0.1, height=0.15 in the data coordinate
    ae = AnchoredEllipse(ax.transData, width=0.1, height=0.15, angle=0.,
                         loc=3, pad=0.5, borderpad=0.4, frameon=True)

    ax.add_artist(ae)


def draw_sizebar(ax):
    from mpl_toolkits.axes_grid1.anchored_artists import AnchoredSizeBar
    # draw a horizontal bar with length of 0.1 in Data coordinate
    # (ax.transData) with a label underneath.
    asb = AnchoredSizeBar(ax.transData,
                          0.1,
                          r"1$^{\prime}$",
                          loc=8,
                          pad=0.1, borderpad=0.5, sep=5,
                          frameon=False)
    ax.add_artist(asb)


if 1:
    ax = plt.gca()
    ax.set_aspect(1.)

    draw_text(ax)
    draw_circle(ax)
    draw_ellipse(ax)
    draw_sizebar(ax)

    plt.show()

Keywords: python, matplotlib, pylab, example, codex (see Search examples)