Re: [Matplotlib-users] how to draw concentric donuts chart ?

[不坏阿峰 <onl...@gm...>]

very nice and thanks  a lot , you are very nice.
and could you give me some guide how to put this in qlabel of pyqt ?  or
what's widget is better to work with these code




2014-05-16 21:25 GMT+07:00 Joe Kington <jof...@gm...>:

>
>
>
> On Fri, May 16, 2014 at 7:36 AM, Alan G Isaac <ala...@gm...>wrote:
>
>> On 5/16/2014 7:51 AM, 不坏阿峰 wrote:
>> > how to use matplotlib to drew chart like this ?
>> > http://www.advsofteng.com/doc/cdpydoc/images/concentric.png
>>
>>
>> Not an answer to your question:
>> http://www.businessinsider.com/pie-charts-are-the-worst-2013-6
>>
>> fwiw,
>> Alan Isaac
>>
>
> Alan is quite right. However, that aside, here's how you'd do it in
> matplotlib:
>
> import matplotlib.pyplot as plt
>
> fig, ax = plt.subplots()
> ax.axis('equal')
>
> # Width of the "rings" (percentages if the largest "radius"==1)
> width = 0.35
>
> # Note the different "radius" values: largest --> outside "donut".
> kwargs = dict(colors=['#66FF66', '#9999FF', '#FF9999'], startangle=90)
> inside, _ = ax.pie([45, 87, 77], radius=1-width, **kwargs)
> outside, _ = ax.pie([96, 124, 88], radius=1, **kwargs)
>
> # This is the key. We'll set the "width" for all wedges generated by
> ax.pie.
> # (The inside radius for each donut will be "radius" - "width")
> plt.setp(inside + outside, width=width, edgecolor='white')
>
> ax.legend(inside[::-1], ['Hardware', 'Software', 'Services'],
> frameon=False)
>
> plt.show()
>
>
>
> If you wanted to replicate the example figure more closely, you'll need to
> get a touch fancier:
>
> import matplotlib.pyplot as plt
> import numpy as np
>
> def pie(ax, values, **kwargs):
>     total = sum(values)
>     def formatter(pct):
>         return '${:0.0f}M\n({:0.1f}%)'.format(pct*total/100, pct)
>     wedges, _, labels = ax.pie(values, autopct=formatter, **kwargs)
>     return wedges
>
> fig, ax = plt.subplots()
> ax.axis('equal')
>
> width = 0.35
> kwargs = dict(colors=['#66FF66', '#9999FF', '#FF9999'], startangle=90)
>
> outside = pie(ax, [96, 124, 88], radius=1, pctdistance=1-width/2, **kwargs)
> inside = pie(ax, [45, 87, 77], radius=1-width,
>              pctdistance=1 - (width/2) / (1-width), **kwargs)
> plt.setp(inside + outside, width=width, edgecolor='white')
>
> ax.legend(inside[::-1], ['Hardware', 'Software', 'Services'],
> frameon=False)
>
> kwargs = dict(size=13, color='white', va='center', fontweight='bold')
> ax.text(0, 0, 'Year 2005', ha='center',
>         bbox=dict(boxstyle='round', facecolor='blue', edgecolor='none'),
>         **kwargs)
> ax.annotate('Year 2006', (0, 0), xytext=(np.radians(-45), 1.1),
>             bbox=dict(boxstyle='round', facecolor='green',
> edgecolor='none'),
>             textcoords='polar', ha='left', **kwargs)
>
> plt.show()
>
>
>
> Hope those examples give you some ideas!
> Cheers,
> -Joe
> ​
>
>
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