在matplotlib中水平显示单选按钮

问题描述

我正在使用 matplotlib.widgets 在我的小部件中创建单选按钮，即将出现的按钮垂直堆叠，我希望它们水平堆叠.

MVCE:

 将matplotlib.pyplot导入为plt从 matplotlib.widgets 导入 RadioButtonsplt.subplots_adjust(left=0.2)rax = plt.axes([0.5,0.05,0.1,0.1])radio = RadioButtons(rax ,['1','2','3'], active=0, activecolor='blue' )plt.show()

如您在本示例中看到的，您可以像这样获得单选按钮,

我想知道有没有办法水平堆叠这些单选按钮.

解决方案

当前正在尝试在

或

  rax = plt.axes([0.2,0.5,0.25,0.1])radio = MyRadioButtons(rax，["AA"，"BB"，"CC"，"DD"]，ncol = 2)

I am using the matplotlib.widgets to create radio buttons in my widgets, the buttons coming are stacked vertically, I would like them to be stacked horizontally.

MVCE:

import matplotlib.pyplot as plt
from matplotlib.widgets import RadioButtons
plt.subplots_adjust(left=0.2)
rax = plt.axes([0.5,0.05,0.1,0.1])
radio =  RadioButtons(rax ,['1','2','3'], active=0, activecolor='blue' )
plt.show()

As you can see with this example you can get the radio buttons like this,

I am wondering is there a way to stack these radio buttons horizontally.

解决方案

There is currently an attempt to introduce an orientation argument to RadioButtons in PR #13374; this has not yet been finalized.

As I had commented in this PR, an alternative option would be to use a scatter plot for the buttons. The following shows how I would imagine this implementation. There are two main enhancements compared to the usual buttons:

• Radio buttons are always round independent of the size of the axes.
• They can be aligned arbitrarily, in particular horizontally.

This is achieved by creating a legend internally, which has all the required options readily available. Any valid arguments to Legend can be used for the Buttons as well.

import matplotlib.pyplot as plt
from matplotlib.widgets import AxesWidget, RadioButtons

class MyRadioButtons(RadioButtons):

    def __init__(self, ax, labels, active=0, activecolor='blue', size=49,
                 orientation="vertical", **kwargs):
        """
        Add radio buttons to an `~.axes.Axes`.
        Parameters
        ----------
        ax : `~matplotlib.axes.Axes`
            The axes to add the buttons to.
        labels : list of str
            The button labels.
        active : int
            The index of the initially selected button.
        activecolor : color
            The color of the selected button.
        size : float
            Size of the radio buttons
        orientation : str
            The orientation of the buttons: 'vertical' (default), or 'horizontal'.
        Further parameters are passed on to `Legend`.
        """
        AxesWidget.__init__(self, ax)
        self.activecolor = activecolor
        axcolor = ax.get_facecolor()
        self.value_selected = None

        ax.set_xticks([])
        ax.set_yticks([])
        ax.set_navigate(False)

        circles = []
        for i, label in enumerate(labels):
            if i == active:
                self.value_selected = label
                facecolor = activecolor
            else:
                facecolor = axcolor
            p = ax.scatter([],[], s=size, marker="o", edgecolor='black',
                           facecolor=facecolor)
            circles.append(p)
        if orientation == "horizontal":
            kwargs.update(ncol=len(labels), mode="expand")
        kwargs.setdefault("frameon", False)
        self.box = ax.legend(circles, labels, loc="center", **kwargs)
        self.labels = self.box.texts
        self.circles = self.box.legendHandles
        for c in self.circles:
            c.set_picker(5)
        self.cnt = 0
        self.observers = {}

        self.connect_event('pick_event', self._clicked)


    def _clicked(self, event):
        if (self.ignore(event) or event.mouseevent.button != 1 or
            event.mouseevent.inaxes != self.ax):
            return
        if event.artist in self.circles:
            self.set_active(self.circles.index(event.artist))

Use it as

plt.subplots_adjust(left=0.2)
rax = plt.axes([0.5,0.05,0.4,0.07])
radio =  MyRadioButtons(rax ,['1','2','3'], active=0, activecolor='crimson',
                        orientation="horizontal")

plt.show()

Or

rax = plt.axes([0.2,0.5,0.25,0.1])
radio =  MyRadioButtons(rax ,["AA", "BB", "CC", "DD"], ncol=2)

这篇关于在matplotlib中水平显示单选按钮的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！