.. only:: html
.. note::
:class: sphx-glr-download-link-note
Click :ref:`here ` to download the full example code
.. rst-class:: sphx-glr-example-title
.. _sphx_glr_gallery_axes_grid1_simple_anchored_artists.py:
=======================
Simple Anchored Artists
=======================
This example illustrates the use of the anchored helper classes found in
:mod:`matplotlib.offsetbox` and in :mod:`mpl_toolkits.axes_grid1`.
An implementation of a similar figure, but without use of the toolkit,
can be found in :doc:`/gallery/misc/anchored_artists`.
.. image:: /gallery/axes_grid1/images/sphx_glr_simple_anchored_artists_001.png
:alt: simple anchored artists
:class: sphx-glr-single-img
.. code-block:: default
import matplotlib.pyplot as plt
def draw_text(ax):
"""
Draw two text-boxes, anchored by different corners to the upper-left
corner of the figure.
"""
from matplotlib.offsetbox import AnchoredText
at = AnchoredText("Figure 1a",
loc='upper left', 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='lower left', 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):
"""
Draw a circle in axis coordinates
"""
from mpl_toolkits.axes_grid1.anchored_artists import AnchoredDrawingArea
from matplotlib.patches import Circle
ada = AnchoredDrawingArea(20, 20, 0, 0,
loc='upper right', pad=0., frameon=False)
p = Circle((10, 10), 10)
ada.da.add_artist(p)
ax.add_artist(ada)
def draw_ellipse(ax):
"""
Draw an ellipse of width=0.1, height=0.15 in data coordinates
"""
from mpl_toolkits.axes_grid1.anchored_artists import AnchoredEllipse
ae = AnchoredEllipse(ax.transData, width=0.1, height=0.15, angle=0.,
loc='lower left', pad=0.5, borderpad=0.4,
frameon=True)
ax.add_artist(ae)
def draw_sizebar(ax):
"""
Draw a horizontal bar with length of 0.1 in data coordinates,
with a fixed label underneath.
"""
from mpl_toolkits.axes_grid1.anchored_artists import AnchoredSizeBar
asb = AnchoredSizeBar(ax.transData,
0.1,
r"1$^{\prime}$",
loc='lower center',
pad=0.1, borderpad=0.5, sep=5,
frameon=False)
ax.add_artist(asb)
ax = plt.gca()
ax.set_aspect(1.)
draw_text(ax)
draw_circle(ax)
draw_ellipse(ax)
draw_sizebar(ax)
plt.show()
.. _sphx_glr_download_gallery_axes_grid1_simple_anchored_artists.py:
.. only :: html
.. container:: sphx-glr-footer
:class: sphx-glr-footer-example
.. container:: sphx-glr-download sphx-glr-download-python
:download:`Download Python source code: simple_anchored_artists.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: simple_anchored_artists.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_