matplotlib.colors
与 matplotlib.markers
记录了 Matplotlib 的图像的颜色与形状的样式表单。
将 tkinter 嵌入到 Matplotlib 是很简单的。首先载入一些必备包:
from tkinter import *
from tkinter.ttk import *
import matplotlib
matplotlib.use("TkAgg")
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
接着使用 Matplotlib 的 Figure
创建画布,并画一些点:
figure = Figure(figsize=(5, 4), dpi=100)
plot = figure.add_subplot(1, 1, 1)
plot.plot(0.5, 0.3, color="#C41E3A", marker="o", linestyle="")
x = [ 0.1, 0.2, 0.3 ]
y = [ -0.1, -0.2, -0.3 ]
plot.plot(x, y, color="blue", marker="x", linestyle="")
最后,将 tkinter 嵌入:
root = Tk()
canvas = FigureCanvasTkAgg(figure, root)
canvas.get_tk_widget().grid(row=0, column=0)
root.mainloop()
效果图如下:
下面是一个完整的例子:
from tkinter import Tk, ttk
# 创建画布需要的库
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
# 创建工具栏需要的库
from matplotlib.backends.backend_tkagg import NavigationToolbar2Tk
# Implement the default Matplotlib key bindings. 快捷键需要的模块
from matplotlib.backend_bases import key_press_handler
# 导入绘图需要的模块
from matplotlib.figure import Figure
import numpy as np
def create_figure():
# 画布的大小和分别率
fig = Figure(figsize=(5, 4), dpi=100)
t = np.arange(0, 3, .01)
# 利用子图画
fig.add_subplot(111).plot(t, 2 * np.sin(2 * np.pi * t))
# 创建画布控件
return fig
# 绑定快捷键函数
def on_key_press(event):
print("you pressed {}".format(event.key))
key_press_handler(event, canvas, toolbar)
# 退出函数
def _quit():
root.quit() # stops mainloop
root.destroy() # this is necessary on Windows to prevent
# Fatal Python Error: PyEval_RestoreThread: NULL tstate
root = Tk()
root.wm_title("Embedding in Tk")
fig = create_figure()
canvas = FigureCanvasTkAgg(fig, master=root)
canvas.draw()
# 创建工具条控件
toolbar = NavigationToolbar2Tk(canvas, root)
toolbar.update()
# 显示工具条控件
canvas.get_tk_widget().pack(side='top', fill='both', expand=1)
# 调用快捷键函数
canvas.mpl_connect("key_press_event", on_key_press)
# 退出按钮控件
button = ttk.Button(master=root, text="Quit", command=_quit)
button.pack(side='bottom')
# 消息循环
root.mainloop()
# If you put root.destroy() here, it will cause an error if the window is
# closed with the window manager.
复杂点的:
import matplotlib
matplotlib.use('TkAgg')
import numpy as np
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2Tk
from matplotlib.figure import Figure
from tkinter import Tk, ttk
class Application(Tk):
'''
文件夹选择程序
界面与逻辑分离
'''
def __init__(self):
'''初始化'''
super().__init__()
self.wm_title("Embed matplotlib in tkinter")
self.createWidgets()
def create_figure_canvas(self, figure):
self.canvas = FigureCanvasTkAgg(figure, master=self)
tkcanvas = self.canvas.get_tk_widget()
tkcanvas.create_rectangle([20, 20, 200, 200], fill='red')
toolbar = NavigationToolbar2Tk(self.canvas, self)
toolbar.update()
footframe = ttk.Frame(master=self)
footframe.pack(side='bottom')
tkcanvas.pack(side='top', fill='both', expand=1)
ttk.Button(master=footframe, text='重画', command=self.draw).pack(side='left')
ttk.Button(master=footframe, text='退出', command=self._quit).pack(side='left')
self.draw() # 绘图
def createWidgets(self):
'''界面'''
fig = Figure(figsize=(10, 10),dpi=80,facecolor="pink",edgecolor='green',frameon=True)
self.ax = fig.add_subplot(111)
self.create_figure_canvas(fig)
def draw(self):
'''绘图逻辑'''
x = np.random.randint(0,50,size=100)
y = np.random.randint(0,50,size=100)
self.ax.clear()
self.ax.scatter(x, y, s=3) # 重新画
self.canvas.draw()
def _quit(self):
'''退出'''
self.quit() # 停止 mainloop
self.destroy() # 销毁所有部件
if __name__ == '__main__':
# 实例化Application
app = Application()
# 主消息循环:
app.mainloop()