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

[不坏阿峰 <onl...@gm...>]

Dear all

i try do some modify, it can display the diagram, but not correct.  could
you help me correct it ? sorry that i knew a bit about matplotlib.   many
thanks!
only display like this.
[image: 内嵌图片 1]

#######################################################
from __future__ import unicode_literals
import matplotlib.pyplot as plt
import numpy as np

import sys, os, random
from PyQt4 import QtGui, QtCore

from numpy import arange, sin, pi
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
FigureCanvas
from matplotlib.figure import Figure
from mychart_ui import Ui_Form


class MyMplCanvas(FigureCanvas):
    """Ultimately, this is a QWidget (as well as a FigureCanvasAgg,
etc.)."""
    def __init__(self, parent=None, width=5, height=4, dpi=100):
        #fig = Figure(figsize=(width, height), dpi=dpi)
        # self.axes = fig.add_subplot(111)
        # We want the axes cleared every time plot() is called
        #self.axes.hold(False)
        self.fig, self.axes = plt.subplots()
        self.compute_initial_figure()

        #
        FigureCanvas.__init__(self, self.fig)
        self.setParent(parent)

        # FigureCanvas.setSizePolicy(self,
        #                            QtGui.QSizePolicy.Expanding,
        #                            QtGui.QSizePolicy.Expanding)
        # FigureCanvas.updateGeometry(self)

    def compute_initial_figure(self):
        pass
class MyStaticMplCanvas(MyMplCanvas):
    """Simple canvas with a sine plot."""
    def compute_initial_figure(self):
        #fig, ax = plt.subplots()
        #ax.axis = ('equal')
        fig =self.fig
        ax = self.axes
        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)

        #ax.axes.plot()

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


#plt.show()


class myWidget(QtGui.QWidget, Ui_Form):
    def __init__(self,parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.setupUi(self)
        sc = MyStaticMplCanvas(self.matwidget, width=5, height=4, dpi=100)
qApp = QtGui.QApplication(sys.argv)

# aw = ApplicationWindow()
# aw.setWindowTitle("%s" % progname)
aw = myWidget()
aw.show()
sys.exit(qApp.exec_())


2014-05-17 11:39 GMT+07:00 不坏阿峰 <onl...@gm...>:

> i have try modify Official example use my Qwidget in my Ui.  it works.   i
> am fresher to use matplotlib , maybe my question is stupid .  your code is
> use pyplot,  is the same way to use like below code?  i do not how to
> change your code to a class, and use with Qwidget.
>
> hope you can give me some guide.  thanks a lot
>
> >>>>>>>
> from __future__ import unicode_literals
> import sys, os, random
> from PyQt4 import QtGui, QtCore
>
> from numpy import arange, sin, pi
> from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
> FigureCanvas
> from matplotlib.figure import Figure
> from mychart_ui import Ui_Form
>
> class MyMplCanvas(FigureCanvas):
>     """Ultimately, this is a QWidget (as well as a FigureCanvasAgg,
> etc.)."""
>     def __init__(self, parent=None, width=5, height=4, dpi=100):
>         fig = Figure(figsize=(width, height), dpi=dpi)
>         self.axes = fig.add_subplot(111)
>         # We want the axes cleared every time plot() is called
>         self.axes.hold(False)
>
>         self.compute_initial_figure()
>
>         #
>         FigureCanvas.__init__(self, fig)
>         self.setParent(parent)
>
>         FigureCanvas.setSizePolicy(self,
>                                    QtGui.QSizePolicy.Expanding,
>                                    QtGui.QSizePolicy.Expanding)
>         FigureCanvas.updateGeometry(self)
>
>     def compute_initial_figure(self):
>         pass
>
> class MyStaticMplCanvas(MyMplCanvas):
>     """Simple canvas with a sine plot."""
>     def compute_initial_figure(self):
>         t = arange(0.0, 3.0, 0.01)
>         s = sin(2*pi*t)
>         self.axes.plot(t, s)
>
> ##  this is my custom Ui design in Qt designer.
> class myWidget(QtGui.QWidget, Ui_Form):
>     def __init__(self,parent=None):
>         QtGui.QWidget.__init__(self, parent)
>         self.setupUi(self)
>         sc = MyStaticMplCanvas(self.matwidget, width=5, height=4, dpi=100)
> qApp = QtGui.QApplication(sys.argv)
>
> aw = myWidget()
> aw.show()
> sys.exit(qApp.exec_())
> <<<<<<<<
>
>
>
>
> 2014-05-16 22:23 GMT+07:00 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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>>
>