.. _pylab_examples-agg_buffer_to_array:

pylab_examples example code: agg_buffer_to_array.py
===================================================



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

::

    import matplotlib
    matplotlib.use('Agg')
    from pylab import figure, show
    import numpy as np
    
    # make an agg figure
    fig = figure()
    ax = fig.add_subplot(111)
    ax.plot([1,2,3])
    ax.set_title('a simple figure')
    fig.canvas.draw()
    
    # grab rhe pixel buffer and dumpy it into a numpy array
    buf = fig.canvas.buffer_rgba(0,0)
    l, b, w, h = fig.bbox.bounds
    X = np.fromstring(buf, np.uint8)
    X.shape = h,w,4
    
    # now display the array X as an Axes in a new figure
    fig2 = figure()
    ax2 = fig2.add_subplot(111, frameon=False)
    ax2.imshow(X)
    show()
    

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