### Navigation

- index
- modules |
- home|
- examples|
- tutorials|
- pyplot|
- docs »

# Rasterization Demo

    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

Total running time of the script: ( 0 minutes 1.462 seconds)

Generated by Sphinx-Gallery