.. _pylab_examples-demo_annotation_box:

pylab_examples example code: demo_annotation_box.py
===================================================



.. plot:: /home/mandrake/rpm/BUILD/matplotlib-1.1.1/doc/mpl_examples/pylab_examples/demo_annotation_box.py

::

    import matplotlib.pyplot as plt
    from matplotlib.offsetbox import TextArea, DrawingArea, OffsetImage, \
         AnnotationBbox
    from matplotlib.cbook import get_sample_data
    
    import numpy as np
    
    if 1:
        fig = plt.gcf()
        fig.clf()
        ax = plt.subplot(111)
    
        offsetbox = TextArea("Test 1", minimumdescent=False)
    
        xy = (0.5, 0.7)
    
        ax.plot(xy[0], xy[1], ".r")
    
        ab = AnnotationBbox(offsetbox, xy,
                            xybox=(-20, 40),
                            xycoords='data',
                            boxcoords="offset points",
                            arrowprops=dict(arrowstyle="->"))
        ax.add_artist(ab)
    
        offsetbox = TextArea("Test", minimumdescent=False)
    
        ab = AnnotationBbox(offsetbox, xy,
                            xybox=(1.02, xy[1]),
                            xycoords='data',
                            boxcoords=("axes fraction", "data"),
                            box_alignment=(0.,0.5),
                            arrowprops=dict(arrowstyle="->"))
        ax.add_artist(ab)
    
    
        from matplotlib.patches import Circle
        da = DrawingArea(20, 20, 0, 0)
        p = Circle((10, 10), 10)
        da.add_artist(p)
    
        xy = [0.3, 0.55]
        ab = AnnotationBbox(da, xy,
                            xybox=(1.02, xy[1]),
                            xycoords='data',
                            boxcoords=("axes fraction", "data"),
                            box_alignment=(0.,0.5),
                            arrowprops=dict(arrowstyle="->"))
                            #arrowprops=None)
    
        ax.add_artist(ab)
    
    
        arr = np.arange(100).reshape((10,10))
        im = OffsetImage(arr, zoom=2)
    
        ab = AnnotationBbox(im, xy,
                            xybox=(-50., 50.),
                            xycoords='data',
                            boxcoords="offset points",
                            pad=0.3,
                            arrowprops=dict(arrowstyle="->"))
                            #arrowprops=None)
    
        ax.add_artist(ab)
    
    
        # another image
    
    
        from matplotlib._png import read_png
        fn = get_sample_data("lena.png", asfileobj=False)
        arr_lena = read_png(fn)
    
        imagebox = OffsetImage(arr_lena, zoom=0.2)
    
        ab = AnnotationBbox(imagebox, xy,
                            xybox=(120., -80.),
                            xycoords='data',
                            boxcoords="offset points",
                            pad=0.5,
                            arrowprops=dict(arrowstyle="->",
                                            connectionstyle="angle,angleA=0,angleB=90,rad=3")
                            )
    
    
        ax.add_artist(ab)
    
        ax.set_xlim(0, 1)
        ax.set_ylim(0, 1)
    
    
        plt.draw()
        plt.show()
    

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