tkinter-matplotlib

绘图

def onSpanSelect(self, x0, x1):
    """
    记住当前 span 的数值，当新的 span 绘制完毕后，
    根据记录信息，主动绘制之前的 span
    :param x0:
    :param x1:
    :return:
    """
    print("onSpanSelect enter... x0={},x1={}".format(x0, x1))
    self.x1 = x0
    self.x2 = x1
    ylim = plt.gca().get_ylim()
    self.y2 = ylim[1]
    self.y1 = ylim[0]

def draw(self):
    df = load_data_txt('4444_height.csv')
    # 设置坐标轴范围
    plt.xlim((13000, 35000))  # 也可写成plt.xlim(-5, 5)
    plt.ylim((-2000, 4500))  # 也可写成plt.ylim(-2, 2)

    self.fig = plt.figure(num=1)
    self.ax = self.fig.add_subplot(111)
    # self.ax.autoscale(enable=True , tight=False)

    self.ax.plot(df['width'], df['height'], marker='o', mec='b', mfc='w')
    self.ax.set_aspect(1)
    self.ax.grid(True, linestyle='-.')

    # ax.legend(p1, 'orig')

    self.canvas = FigureCanvasTkAgg(self.fig, self)

    toolbar = NavigationToolbar2Tk(self.canvas, self)
    toolbar.update()
    self.canvas.get_tk_widget().pack(side=tk.TOP, fill=tk.X, expand=True)

    self.canvas.draw()
    self.canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)

    ##关联鼠标点击事件
    # self.fig.canvas.mpl_connect('button_press_event', self.on_ml_click)
    # self.fig.canvas.mpl_connect('button_release_event', self.on_mouse_release)
    # self.fig.canvas.mpl_connect('motion_notify_event', self.on_mouse_motion)

    self.on_draw_points()

    self.span = SpanSelector(self.ax, self.onSpanSelect, 'horizontal', useblit=True)
    self.canvas.mpl_connect('key_press_event', self.span)

    self.fig.canvas.draw()

中文内容

# 显示中文标签
plt.rcParams['font.sans-serif'] = ['SimHei']
# 显示负号
plt.rcParams['axes.unicode_minus'] = False
# 有中文使用 u'中文内容'
# 隐藏工具栏
plt.rcParams['toolbar'] = 'None'