Re: [PyX-user] Combining legend between points and lines

[Joerg L. <jo...@us...>]

Hello Nor,

I think precisely this use case has been documented in

        http://pyx.sourceforge.net/examples/graphs/join.html

HTH,

        J
On 15.04.13, Néstor Espinoza wrote:
>    Hello everyone,
> 
>     I have a 'small' question regarding the combination of legends. Suppose I
>    have a model, and the binned version of it in two vectors, say, model,
>    with the corresponding values for x, x_model and binned_model with the
>    corresponding values of x, x_binned_model. 
>     What I want to do is to plot this using pyx, but, in the legend, combine
>    the symbol I use for the binned version of the model with the model
>    itself, which I plot as a line. So I have something like the following
>    code:
> 
>    #########################################
>    from pyx import *
>    from numpy import np
>    # Create a model
>    x = np.array([0,1,2,3,4,5,6])
>    model = x**2
>    # Bin two values; 0.5, binned between 0 and 1, and 4.5, binned between 4
>    and 5:
>    x_binned_model = np.array([0.5,4.5])
>    x_binned_model = np.array([0.33,20.33])
>    c = canvas.canvas()
>    g = c.insert(graph.graphxy(height=5,width=10,
>    key=graph.key.key(pos='bl'),\
>          x = graph.axis.linear(title = 'x axis'),\
>          y = graph.axis.linear(title = 'y axis')))
>    # Plot 'full version' of the model:
>    g.plot(graph.data.values(x=x_model,y=model, title = 'The model',\
>            styles = [graph.style.line([color.cmyk.CornflowerBlue,\
>                                        style.linestyle.solid,\
>                                        style.linewidth.THIN])])
>    # ...binned version of the model:
>    g.plot(graph.data.values(x=x_binned_model, y=binned_model, title = 'The
>    model'),\
>              styles =
>    [graph.style.symbol(graph.style.symbol.square,symbolattrs =
>    [deco.filled([color.cmyk.CornflowerBlue]),
>    deco.stroked([color.cmyk.CornflowerBlue])],size = 0.1)])
>    c.writePDFfile("Figure")
>    #########################################
> 
>    So when you plot it, you have two legends: one with a line for the model
>    and one with squares for the bined model: is there a way to combine the
>    two and just have one legend, with the line and the square overplotted on
>    it?
>    Cheers
>    --
>    Nor

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