.. 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_units_ellipse_with_units.py: ================== Ellipse With Units ================== Compare the ellipse generated with arcs versus a polygonal approximation .. only:: builder_html This example requires :download:`basic_units.py ` .. code-block:: python from basic_units import cm import numpy as np from matplotlib import patches import matplotlib.pyplot as plt xcenter, ycenter = 0.38*cm, 0.52*cm width, height = 1e-1*cm, 3e-1*cm angle = -30 theta = np.deg2rad(np.arange(0.0, 360.0, 1.0)) x = 0.5 * width * np.cos(theta) y = 0.5 * height * np.sin(theta) rtheta = np.radians(angle) R = np.array([ [np.cos(rtheta), -np.sin(rtheta)], [np.sin(rtheta), np.cos(rtheta)], ]) x, y = np.dot(R, np.array([x, y])) x += xcenter y += ycenter .. code-block:: python fig = plt.figure() ax = fig.add_subplot(211, aspect='auto') ax.fill(x, y, alpha=0.2, facecolor='yellow', edgecolor='yellow', linewidth=1, zorder=1) e1 = patches.Ellipse((xcenter, ycenter), width, height, angle=angle, linewidth=2, fill=False, zorder=2) ax.add_patch(e1) ax = fig.add_subplot(212, aspect='equal') ax.fill(x, y, alpha=0.2, facecolor='green', edgecolor='green', zorder=1) e2 = patches.Ellipse((xcenter, ycenter), width, height, angle=angle, linewidth=2, fill=False, zorder=2) ax.add_patch(e2) fig.savefig('ellipse_compare') .. image:: /gallery/units/images/sphx_glr_ellipse_with_units_001.png :class: sphx-glr-single-img .. code-block:: python fig = plt.figure() ax = fig.add_subplot(211, aspect='auto') ax.fill(x, y, alpha=0.2, facecolor='yellow', edgecolor='yellow', linewidth=1, zorder=1) e1 = patches.Arc((xcenter, ycenter), width, height, angle=angle, linewidth=2, fill=False, zorder=2) ax.add_patch(e1) ax = fig.add_subplot(212, aspect='equal') ax.fill(x, y, alpha=0.2, facecolor='green', edgecolor='green', zorder=1) e2 = patches.Arc((xcenter, ycenter), width, height, angle=angle, linewidth=2, fill=False, zorder=2) ax.add_patch(e2) fig.savefig('arc_compare') plt.show() .. image:: /gallery/units/images/sphx_glr_ellipse_with_units_002.png :class: sphx-glr-single-img .. _sphx_glr_download_gallery_units_ellipse_with_units.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: ellipse_with_units.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: ellipse_with_units.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_