Module « matplotlib.pyplot »

Fonction stackplot - module matplotlib.pyplot

Signature de la fonction stackplot

def stackplot(x, *args, labels=(), colors=None, baseline='zero', data=None, **kwargs) 

Description

stackplot.__doc__

Draw a stacked area plot.

Parameters
----------
x : (N,) array-like

y : (M, N) array-like
    The data is assumed to be unstacked. Each of the following
    calls is legal::

        stackplot(x, y)           # where y has shape (M, N)
        stackplot(x, y1, y2, y3)  # where y1, y2, y3, y4 have length N

baseline : {'zero', 'sym', 'wiggle', 'weighted_wiggle'}
    Method used to calculate the baseline:

    - ``'zero'``: Constant zero baseline, i.e. a simple stacked plot.
    - ``'sym'``:  Symmetric around zero and is sometimes called
      'ThemeRiver'.
    - ``'wiggle'``: Minimizes the sum of the squared slopes.
    - ``'weighted_wiggle'``: Does the same but weights to account for
      size of each layer. It is also called 'Streamgraph'-layout. More
      details can be found at http://leebyron.com/streamgraph/.

labels : list of str, optional
    A sequence of labels to assign to each data series. If unspecified,
    then no labels will be applied to artists.

colors : list of color, optional
    A sequence of colors to be cycled through and used to color the stacked
    areas. The sequence need not be exactly the same length as the number
    of provided *y*, in which case the colors will repeat from the
    beginning.

    If not specified, the colors from the Axes property cycle will be used.

**kwargs
    All other keyword arguments are passed to `.Axes.fill_between`.

Returns
-------
list of `.PolyCollection`
    A list of `.PolyCollection` instances, one for each element in the
    stacked area plot.

Notes
-----


.. note::
    In addition to the above described arguments, this function can take
    a *data* keyword argument. If such a *data* argument is given,
    every other argument can also be string ``s``, which is
    interpreted as ``data[s]`` (unless this raises an exception).

    Objects passed as **data** must support item access (``data[s]``) and
    membership test (``s in data``).