.. _pylab_examples-annotation_demo2:

pylab_examples example code: annotation_demo2.py
================================================



.. plot:: /build/matplotlib-Gi1JJZ/matplotlib-1.5.1/doc/mpl_examples/pylab_examples/annotation_demo2.py

::

    
    import matplotlib.pyplot as plt
    from matplotlib.patches import Ellipse
    import numpy as np
    
    if 1:
        fig = plt.figure(1, figsize=(8, 5))
        ax = fig.add_subplot(111, autoscale_on=False, xlim=(-1, 5), ylim=(-4, 3))
    
        t = np.arange(0.0, 5.0, 0.01)
        s = np.cos(2*np.pi*t)
        line, = ax.plot(t, s, lw=3, color='purple')
    
        ax.annotate('arrowstyle', xy=(0, 1), xycoords='data',
                    xytext=(-50, 30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->")
                    )
    
        ax.annotate('arc3', xy=(0.5, -1), xycoords='data',
                    xytext=(-30, -30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="arc3,rad=.2")
                    )
    
        ax.annotate('arc', xy=(1., 1), xycoords='data',
                    xytext=(-40, 30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="arc,angleA=0,armA=30,rad=10"),
                    )
    
        ax.annotate('arc', xy=(1.5, -1), xycoords='data',
                    xytext=(-40, -30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="arc,angleA=0,armA=20,angleB=-90,armB=15,rad=7"),
                    )
    
        ax.annotate('angle', xy=(2., 1), xycoords='data',
                    xytext=(-50, 30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="angle,angleA=0,angleB=90,rad=10"),
                    )
    
        ax.annotate('angle3', xy=(2.5, -1), xycoords='data',
                    xytext=(-50, -30), textcoords='offset points',
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="angle3,angleA=0,angleB=-90"),
                    )
    
        ax.annotate('angle', xy=(3., 1), xycoords='data',
                    xytext=(-50, 30), textcoords='offset points',
                    bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="angle,angleA=0,angleB=90,rad=10"),
                    )
    
        ax.annotate('angle', xy=(3.5, -1), xycoords='data',
                    xytext=(-70, -60), textcoords='offset points',
                    size=20,
                    bbox=dict(boxstyle="round4,pad=.5", fc="0.8"),
                    arrowprops=dict(arrowstyle="->",
                                    connectionstyle="angle,angleA=0,angleB=-90,rad=10"),
                    )
    
        ax.annotate('angle', xy=(4., 1), xycoords='data',
                    xytext=(-50, 30), textcoords='offset points',
                    bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="->",
                                    shrinkA=0, shrinkB=10,
                                    connectionstyle="angle,angleA=0,angleB=90,rad=10"),
                    )
    
        ann = ax.annotate('', xy=(4., 1.), xycoords='data',
                          xytext=(4.5, -1), textcoords='data',
                          arrowprops=dict(arrowstyle="<->",
                                          connectionstyle="bar",
                                          ec="k",
                                          shrinkA=5, shrinkB=5,
                                          )
                          )
    
    
    if 1:
        fig = plt.figure(2)
        fig.clf()
        ax = fig.add_subplot(111, autoscale_on=False, xlim=(-1, 5), ylim=(-5, 3))
    
        el = Ellipse((2, -1), 0.5, 0.5)
        ax.add_patch(el)
    
        ax.annotate('$->$', xy=(2., -1), xycoords='data',
                    xytext=(-150, -140), textcoords='offset points',
                    bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="->",
                                    patchB=el,
                                    connectionstyle="angle,angleA=90,angleB=0,rad=10"),
                    )
    
        ax.annotate('fancy', xy=(2., -1), xycoords='data',
                    xytext=(-100, 60), textcoords='offset points',
                    size=20,
                    # bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="fancy",
                                    fc="0.6", ec="none",
                                    patchB=el,
                                    connectionstyle="angle3,angleA=0,angleB=-90"),
                    )
    
        ax.annotate('simple', xy=(2., -1), xycoords='data',
                    xytext=(100, 60), textcoords='offset points',
                    size=20,
                    # bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="simple",
                                    fc="0.6", ec="none",
                                    patchB=el,
                                    connectionstyle="arc3,rad=0.3"),
                    )
    
        ax.annotate('wedge', xy=(2., -1), xycoords='data',
                    xytext=(-100, -100), textcoords='offset points',
                    size=20,
                    # bbox=dict(boxstyle="round", fc="0.8"),
                    arrowprops=dict(arrowstyle="wedge,tail_width=0.7",
                                    fc="0.6", ec="none",
                                    patchB=el,
                                    connectionstyle="arc3,rad=-0.3"),
                    )
    
        ann = ax.annotate('wedge', xy=(2., -1), xycoords='data',
                          xytext=(0, -45), textcoords='offset points',
                          size=20,
                          bbox=dict(boxstyle="round", fc=(1.0, 0.7, 0.7), ec=(1., .5, .5)),
                          arrowprops=dict(arrowstyle="wedge,tail_width=1.",
                                          fc=(1.0, 0.7, 0.7), ec=(1., .5, .5),
                                          patchA=None,
                                          patchB=el,
                                          relpos=(0.2, 0.8),
                                          connectionstyle="arc3,rad=-0.1"),
                          )
    
        ann = ax.annotate('wedge', xy=(2., -1), xycoords='data',
                          xytext=(35, 0), textcoords='offset points',
                          size=20, va="center",
                          bbox=dict(boxstyle="round", fc=(1.0, 0.7, 0.7), ec="none"),
                          arrowprops=dict(arrowstyle="wedge,tail_width=1.",
                                          fc=(1.0, 0.7, 0.7), ec="none",
                                          patchA=None,
                                          patchB=el,
                                          relpos=(0.2, 0.5),
                                          )
                          )
    
    
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)