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Add new plot style: stackplot #819

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dmcdougall wants to merge 13 commits into from
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Add new plot style: stackplot #819

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914385a
Added new plot style: stackplot.
dmcdougall Apr 7, 2012
4557573
Added stackplot example.
dmcdougall Apr 7, 2012
ff8ecde
Make docstring more helpful.
dmcdougall Apr 14, 2012
8bbac65
Make stackplot take an arbitrary number of args.
dmcdougall Apr 14, 2012
6674548
Updated stackplot example.
dmcdougall Apr 14, 2012
3e8fe6e
Update changelog to include stackplot.
dmcdougall Apr 14, 2012
38a903f
Stackplot now supports the same keyword aargs as matplotlib.Axes.fill…
dmcdougall Apr 23, 2012
91a233a
Fixed an issue where stackplot didn't fill stacked data in correct or…
dmcdougall Apr 23, 2012
7b93874
Added stackplot to list of pyplot commands.
dmcdougall Apr 23, 2012
a66ca21
Added support for custom colour cycle.
dmcdougall Apr 23, 2012
a3a35fb
Add stackplot to list of plotting commands.
dmcdougall Jun 19, 2012
0fd841c
Added stackplot unit test.
dmcdougall Jul 5, 2012
cd629e5
Removed superfluous file.
dmcdougall Jul 6, 2012
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Stackplot now supports the same keyword aargs as matplotlib.Axes.fill… 
…_between().

This is a measure to make boilerplate.py not produce a pyplot.py file
with syntax errors. It's also a sensible course of action considering
new stackplot features will almost certainly require keyword arguments
anyway.
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@dmcdougall
dmcdougall committed Jun 19, 2012
commit 38a903f3a3841e070fd26040784fdac4fb015285
4 changes: 2 additions & 2 deletions lib/matplotlib/axes.py
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Expand Up @@ -6409,8 +6409,8 @@ def quiver(self, *args, **kw):
return q
quiver.__doc__ = mquiver.Quiver.quiver_doc

def stackplot(self, x, *args):
return mstack.stackplot(self, x, *args)
def stackplot(self, x, *args, **kwargs):
return mstack.stackplot(self, x, *args, **kwargs)
stackplot.__doc__ = mstack.stackplot.__doc__

def streamplot(self, x, y, u, v, density=1, linewidth=None, color=None,
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14 changes: 8 additions & 6 deletions lib/matplotlib/stackplot.py
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Expand Up @@ -12,7 +12,7 @@
__all__ = ['stackplot']


def stackplot(axes, x, *args):
def stackplot(axes, x, *args, **kwargs):
"""Draws a stacked area plot.

Parameters
Expand All @@ -23,12 +23,14 @@ def stackplot(axes, x, *args):
calls is legal:

stackplot(x, y) # where y is MxN
staclplot(x, y1, y2, y3, y4) # where y1, y2, y3, y4, are all 1xN
staclplot(x, y1, y2, y3, y4) # where y1, y2, y3, y4, are all 1xNm
*kwargs* : All keyword arguments are those supported by
:func:`~matplotlib.Axes.fill_between`

Returns
-------
*r* : A list of `matplotlib.collections.PolyCollection`, one for each
element in the stacked area plot.
*r* : A list of :class:`~matplotlib.collections.PolyCollection`, one for
each element in the stacked area plot.
"""

if len(args) == 1:
Expand All @@ -42,9 +44,9 @@ def stackplot(axes, x, *args):
r = []

# Color between x = 0 and the first array.
r.append(axes.fill_between(x, 0, y_stack[0,:], facecolor=axes._get_lines.color_cycle.next()))
r.append(axes.fill_between(x, 0, y_stack[0,:], facecolor=axes._get_lines.color_cycle.next(), **kwargs))

# Color between array i-1 and array i
for i in xrange(len(y)-1):
r.append(axes.fill_between(x, y_stack[i-1,:], y_stack[i,:], facecolor=axes._get_lines.color_cycle.next()))
r.append(axes.fill_between(x, y_stack[i-1,:], y_stack[i,:], facecolor=axes._get_lines.color_cycle.next(), **kwargs))
return r