Re: [Matplotlib-users] Partial coloring of text in matplotlib

[Paul I. <piv...@gm...>]

Benjamin Root, on 2012-02-07 13:46,  wrote:
> Also, how deep should this rabbit hole go?  I could imagine one could want
> this for title() and figtitle().  Maybe it would be best to implement this
> at the Text() constructor level?

For this reason, I would discourage even implementing such
functionality in the core of matplotlib. This functionality doesn't strike me
as something that ought to be available everywhere by default - if someone
needs it, they can implement it as follows:

-----
import matplotlib.pyplot as plt
from matplotlib import transforms

def rainbow_text(x,y,ls,lc,**kw):
    """
    Take a list of strings ``ls`` and colors ``lc`` and place them next to each
    other, with text ls[i] being shown in color lc[i].

    This example shows how to do both vertical and horizontal text, and will
    pass all keyword arguments to plt.text, so you can set the font size,
    family, etc.
    """
    t = plt.gca().transData
    fig = plt.gcf()
    plt.show()

    #horizontal version
    for s,c in zip(ls,lc):
        text = plt.text(x,y," "+s+" ",color=c, transform=t, **kw)
        text.draw(fig.canvas.get_renderer())
        ex = text.get_window_extent()
        t = transforms.offset_copy(text._transform, x=ex.width, units='dots')

    #vertical version
    for s,c in zip(ls,lc):
        text = plt.text(x,y," "+s+" ",color=c, transform=t,
                rotation=90,va='bottom',ha='center',**kw)
        text.draw(fig.canvas.get_renderer())
        ex = text.get_window_extent()
        t = transforms.offset_copy(text._transform, y=ex.height, units='dots')


plt.figure()
rainbow_text(0.5,0.5,"all unicorns poop rainbows ! ! !".split(), 
        ['red', 'orange', 'brown', 'green', 'blue', 'purple', 'black'],
        size=40)

best,
-- 
Paul Ivanov
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