.. _pylab_examples-set_and_get:

pylab_examples example code: set_and_get.py
===========================================



.. plot:: /builddir/build/BUILD/matplotlib-1.2.0/doc/mpl_examples/pylab_examples/set_and_get.py

::

    """
    
    MATLAB and pylab allow you to use setp and get to set and get
    object properties, as well as to do introspection on the object
    
    set
        To set the linestyle of a line to be dashed, you can do
    
          >>> line, = plot([1,2,3])
          >>> setp(line, linestyle='--')
    
        If you want to know the valid types of arguments, you can provide the
        name of the property you want to set without a value
    
          >>> setp(line, 'linestyle')
              linestyle: [ '-' | '--' | '-.' | ':' | 'steps' | 'None' ]
    
        If you want to see all the properties that can be set, and their
        possible values, you can do
    
            >>> setp(line)
    
        set operates on a single instance or a list of instances.  If you are
        in query mode introspecting the possible values, only the first
        instance in the sequence is used.  When actually setting values, all
        the instances will be set.  Eg, suppose you have a list of two lines,
        the following will make both lines thicker and red
    
            >>> x = arange(0,1.0,0.01)
            >>> y1 = sin(2*pi*x)
            >>> y2 = sin(4*pi*x)
            >>> lines = plot(x, y1, x, y2)
            >>> setp(lines, linewidth=2, color='r')
    
    
    get:
    
        get returns the value of a given attribute.  You can use get to query
        the value of a single attribute
    
            >>> getp(line, 'linewidth')
                0.5
    
        or all the attribute/value pairs
    
        >>> getp(line)
            aa = True
            alpha = 1.0
            antialiased = True
            c = b
            clip_on = True
            color = b
            ... long listing skipped ...
    
    Aliases:
    
      To reduce keystrokes in interactive mode, a number of properties
      have short aliases, eg 'lw' for 'linewidth' and 'mec' for
      'markeredgecolor'.  When calling set or get in introspection mode,
      these properties will be listed as 'fullname or aliasname', as in
    
    
    
    
    """
    
    from __future__ import print_function
    from pylab import *
    
    
    x = arange(0,1.0,0.01)
    y1 = sin(2*pi*x)
    y2 = sin(4*pi*x)
    lines = plot(x, y1, x, y2)
    l1, l2 = lines
    setp(lines, linestyle='--')       # set both to dashed
    setp(l1, linewidth=2, color='r')  # line1 is thick and red
    setp(l2, linewidth=1, color='g')  # line2 is thicker and green
    
    
    print ('Line setters')
    setp(l1)
    print ('Line getters')
    getp(l1)
    
    print ('Rectangle setters')
    setp(gca().patch)
    print ('Rectangle getters')
    getp(gca().patch)
    
    t = title('Hi mom')
    print ('Text setters')
    setp(t)
    print ('Text getters')
    getp(t)
    
    show()
    

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