You are reading documentation for the unreleased version of Matplotlib. Try searching for the released version of this page instead?
Applications are open for the 2018 John Hunter Matplotlib Summer Fellowship. Apply now!
Version 2.2.2.post1752+g4b1f956cb
matplotlib
Fork me on GitHub

Related Topics

Rasterization DemoΒΆ

../../_images/sphx_glr_rasterization_demo_001.png
import numpy as np
import matplotlib.pyplot as plt

d = np.arange(100).reshape(10, 10)
x, y = np.meshgrid(np.arange(11), np.arange(11))

theta = 0.25*np.pi
xx = x*np.cos(theta) - y*np.sin(theta)
yy = x*np.sin(theta) + y*np.cos(theta)

fig, ((ax1, ax2), (ax3, ax4)) = plt.subplots(2, 2)
ax1.set_aspect(1)
ax1.pcolormesh(xx, yy, d)
ax1.set_title("No Rasterization")

ax2.set_aspect(1)
ax2.set_title("Rasterization")

m = ax2.pcolormesh(xx, yy, d)
m.set_rasterized(True)

ax3.set_aspect(1)
ax3.pcolormesh(xx, yy, d)
ax3.text(0.5, 0.5, "Text", alpha=0.2,
         va="center", ha="center", size=50, transform=ax3.transAxes)

ax3.set_title("No Rasterization")


ax4.set_aspect(1)
m = ax4.pcolormesh(xx, yy, d)
m.set_zorder(-20)

ax4.text(0.5, 0.5, "Text", alpha=0.2,
         zorder=-15,
         va="center", ha="center", size=50, transform=ax4.transAxes)

ax4.set_rasterization_zorder(-10)

ax4.set_title("Rasterization z$<-10$")


# ax2.title.set_rasterized(True) # should display a warning

plt.savefig("test_rasterization.pdf", dpi=150)
plt.savefig("test_rasterization.eps", dpi=150)

if not plt.rcParams["text.usetex"]:
    plt.savefig("test_rasterization.svg", dpi=150)
    # svg backend currently ignores the dpi

Keywords: matplotlib code example, codex, python plot, pyplot Gallery generated by Sphinx-Gallery