.. 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_frontpage_contour.py:
=========================
Frontpage contour example
=========================
This example reproduces the frontpage contour example.
.. image:: /gallery/frontpage/images/sphx_glr_contour_001.png
:alt: contour
:class: sphx-glr-single-img
.. code-block:: default
import matplotlib.pyplot as plt
import numpy as np
from matplotlib import cm
extent = (-3, 3, -3, 3)
delta = 0.5
x = np.arange(-3.0, 4.001, delta)
y = np.arange(-4.0, 3.001, delta)
X, Y = np.meshgrid(x, y)
Z1 = np.exp(-X**2 - Y**2)
Z2 = np.exp(-(X - 1)**2 - (Y - 1)**2)
Z = Z1 - Z2
norm = cm.colors.Normalize(vmax=abs(Z).max(), vmin=-abs(Z).max())
fig, ax = plt.subplots()
cset1 = ax.contourf(
X, Y, Z, 40,
norm=norm)
ax.set_xlim(-2, 2)
ax.set_ylim(-2, 2)
ax.set_xticks([])
ax.set_yticks([])
fig.savefig("contour_frontpage.png", dpi=25) # results in 160x120 px image
plt.show()
.. _sphx_glr_download_gallery_frontpage_contour.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: contour.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
:download:`Download Jupyter notebook: contour.ipynb `
.. only:: html
.. rst-class:: sphx-glr-signature
Keywords: matplotlib code example, codex, python plot, pyplot
`Gallery generated by Sphinx-Gallery
`_