.. _pylab_examples-plotfile_demo:

pylab_examples example code: plotfile_demo.py
=============================================



.. plot:: /home/travis/build/jenshnielsen/matplotlib/doc/mpl_examples/pylab_examples/plotfile_demo.py

::

    from pylab import plotfile, show, gca
    import matplotlib.cbook as cbook
    
    fname = cbook.get_sample_data('msft.csv', asfileobj=False)
    fname2 = cbook.get_sample_data('data_x_x2_x3.csv', asfileobj=False)
    
    # test 1; use ints
    plotfile(fname, (0, 5, 6))
    
    # test 2; use names
    plotfile(fname, ('date', 'volume', 'adj_close'))
    
    # test 3; use semilogy for volume
    plotfile(fname, ('date', 'volume', 'adj_close'), plotfuncs={'volume': 'semilogy'})
    
    # test 4; use semilogy for volume
    plotfile(fname, (0, 5, 6), plotfuncs={5: 'semilogy'})
    
    # test 5; single subplot
    plotfile(fname, ('date', 'open', 'high', 'low', 'close'), subplots=False)
    
    # test 6; labeling, if no names in csv-file
    plotfile(fname2, cols=(0, 1, 2), delimiter=' ',
             names=['$x$', '$f(x)=x^2$', '$f(x)=x^3$'])
    
    # test 7; more than one file per figure--illustrated here with a single file
    plotfile(fname2, cols=(0, 1), delimiter=' ')
    plotfile(fname2, cols=(0, 2), newfig=False, delimiter=' ')  # use current figure
    gca().set_xlabel(r'$x$')
    gca().set_ylabel(r'$f(x) = x^2, x^3$')
    
    # test 8; use bar for volume
    plotfile(fname, (0, 5, 6), plotfuncs={5: 'bar'})
    
    show()
    

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