ó ±éRc@s(dZddlZdgZd„ZdS(sâ Stacked area plot for 1D arrays inspired by Douglas Y'barbo's stackoverflow answer: http://stackoverflow.com/questions/2225995/how-can-i-create-stacked-line-graph-with-matplotlib (http://stackoverflow.com/users/66549/doug) iÿÿÿÿNt stackplotc Os*t|ƒdkr$tj|Œ}n$t|ƒdkrHtj|ƒ}n|jdd ƒ}|d k rv|j|ƒn|jddƒ}tj|ddƒ}g}|dkr¸d} n±|dkrøtj|dƒ d } || d d d …f7}nq|d kr`|j d} || d tj d| ƒd d …d fjdƒ} | | :} || 7}n |d krI|j \} } tj | ƒ} tj|dƒ} tj |d d …dd…ftj |ƒfƒ}| |}|d |7}|| }d |d d …df<|d |} tj| jdƒƒ} | d | } || 7}n d |}|d7}t|ƒ‚|j|j|| |dd d …fd|jjjƒ|ƒxytt|ƒdƒD]a}|jjjƒ}|j|j|||d d …f||dd d …fd||ƒqÁW|S(s?Draws a stacked area plot. *x* : 1d array of dimension N *y* : 2d array of dimension MxN, OR any number 1d arrays each of dimension 1xN. The data is assumed to be unstacked. Each of the following calls is legal:: stackplot(x, y) # where y is MxN stackplot(x, y1, y2, y3, y4) # where y1, y2, y3, y4, are all 1xNm Keyword arguments: *baseline* : ['zero', 'sym', 'wiggle', 'weighted_wiggle'] Method used to calculate the baseline. 'zero' is just a simple stacked plot. 'sym' is 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://www.leebyron.com/else/streamgraph/. *colors* : A list or tuple of colors. These will be cycled through and used to colour the stacked areas. All other keyword arguments are passed to :func:`~matplotlib.Axes.fill_between` Returns *r* : A list of :class:`~matplotlib.collections.PolyCollection`, one for each element in the stacked area plot. Note that :class:`~matplotlib.legend.Legend` does not support :class:`~matplotlib.collections.PolyCollection` objects. To create a legend on a stackplot, use a proxy artist: http://matplotlib.org/users/legend_guide.html#using-proxy-artist itcolorstbaselinetzerotaxisigtsymgà?Ntwiggletweighted_wiggles#Baseline method %s not recognised. s5Expected 'zero', 'sym', 'wiggle' or 'weighted_wiggle't facecolor(tlentnpt atleast_2dt row_stacktpoptNonetset_color_cycletcumsumtsumtshapetarangetzerosthstacktdifft ValueErrortappendt fill_betweent _get_linest color_cycletnexttxrange(taxestxtargstkwargstyRRtstacktrt first_linetmtntcenterttotaltincreaset below_sizetmove_upterrstrtitcolor((sN/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/stackplot.pyRsZ'      7   4      ( <(t__doc__tnumpyR t__all__R(((sN/opt/xtal/ccp4-6.5-linux32/lib/python2.7/site-packages/matplotlib/stackplot.pyts