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交互式函数可视化

念川LNSC 2022-04-19 阅读 56

通过tkinter 内嵌 matplotlib实现
本脚本GitHub链接

在这里插入图片描述
在这里插入图片描述

import math
import numpy as np
from tkinter import * 
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg, 
NavigationToolbar2Tk)

fig = Figure(figsize = (5, 5), dpi = 100)
# the value range of x
x = np.arange(1,10,0.01)
# parameter start value
theta0 = 0
# parameter end value
theta0_end = 10

def plot(v):
    l.config(text='theta: ' + v)
    fig.clear()
    global canvas
    
    canvas.get_tk_widget().pack_forget()
    # @ this is a key line you need to change, accroading to your function
    y = [math.sin(float(v)*i) for i in x]
    # adding the subplot
    plot1 = fig.add_subplot(111)
    # plotting the graph
    plot1.plot(x,y)
    # creating the Tkinter canvas
    # containing the Matplotlib figure
    canvas = FigureCanvasTkAgg(fig, master = window)  
    canvas.draw()
    # placing the canvas on the Tkinter window
    canvas.get_tk_widget().pack()
    # # creating the Matplotlib toolbar
#    toolbar = NavigationToolbar2Tk(canvas, window)
    #toolbar.update()
    # placing the toolbar on the Tkinter window
    canvas.get_tk_widget().pack()
# the main Tkinter window
window = Tk()
# setting the title 
window.title('F(x|theta) visualization - By Joshua')
window.geometry('700x700+0+0')



s = Scale(window, 
            label='theta', 
            from_=theta0, 
            to=theta0_end, 
            orient=HORIZONTAL, 
            length=200, 
            showvalue=0,
            tickinterval=2, 
            resolution=0.01, 
            command= plot)
s.pack()

# label
l = Label(window, 
        bg='green', 
        fg='white', 
        text = 'theta',
        font=('Arial', 12), 
        width=30, 
        height=2)
l.pack()

canvas = FigureCanvasTkAgg(fig, master = window)  
# run the gui
window.mainloop()
import math
from scipy.stats import beta
import numpy as np
from tkinter import * 
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import (FigureCanvasTkAgg, 
NavigationToolbar2Tk)

fig = Figure(figsize = (5, 5), dpi = 100)
# the value range of x
x = np.arange(0,1,0.01)
# first parameter start value
a0 = 0.1
# first parameter end value
a0_end = 3
# second parameter start value
b0 = 0.1
# second parameter end value
b0_end = 3
# your function
y = beta.pdf(x, a0, b0)

def plot1(a):
    l1.config(text='alpha: ' + a)
    fig.clear()
    global canvas
    global a0
    a0 = float(a)
    canvas.get_tk_widget().pack_forget()
    #canvas.get_tk_widget().grid_forget()
    plot1 = fig.add_subplot(111)
    # @ this is a key line you need to change, accroading to your function
    y = beta.pdf(x, float(a), b0)
    plot1.plot(x,y)
    canvas = FigureCanvasTkAgg(fig,master = window)  
    canvas.draw()
    canvas.get_tk_widget().pack()
    #canvas.get_tk_widget().grid(row = 3,column=2)

def plot2(b):
    l2.config(text='beta: ' + b)
    fig.clear()
    global canvas
    global b0
    b0 = float(b)
    canvas.get_tk_widget().pack_forget()
    #canvas.get_tk_widget().grid_forget()
    plot1 = fig.add_subplot(111)
    # @ this is a key line you need to change, accroading to your function
    y = beta.pdf(x, a0, float(b))
    plot1.plot(x,y)
    canvas = FigureCanvasTkAgg(fig,master = window)  
    canvas.draw()
    canvas.get_tk_widget().pack()
    #canvas.get_tk_widget().grid(row = 3,column=2)
    
window = Tk()

# setting the title 
window.title('f(x|alpha,beta) visualization - By Joshua')

# dimensions of the main window
window.geometry('700x700+0+0')

# # button that displays the plot
# plot_button = Button(master = window, 
#                      command = plot,
#                      height = 2, 
#                      width = 10,
#                      text = "Plot")
# plot_button.pack()
#
s1 = Scale(window, 
            label='alpha', 
            from_=0.1, 
            to=3, 
            orient=HORIZONTAL, 
            length=200, 
            showvalue=0,
            tickinterval=2, 
            resolution=0.01, 
            command= plot1)
s1.pack()
#s1.grid(row = 1, column = 2)

# 
s2 = Scale(window, 
            label='beta', 
            from_=0.1, 
            to=3, 
            orient=HORIZONTAL, 
            length=200, 
            showvalue=0,
            tickinterval=2, 
            resolution=0.01, 
            command= plot2)
s2.pack()
#s2.grid(row = 2, column = 2)

# 
l1 = Label(window, 
        bg='green', 
        fg='white', 
        text = 'alpha',
        font=('Arial', 12), 
        width=30, 
        height=2)
l1.pack()
#l1.grid(row = 1, column = 1)

l2 = Label(window, 
        bg='blue', 
        fg='white', 
        text = 'beta',
        font=('Arial', 12), 
        width=30, 
        height=2)
l2.pack()
#l2.grid(row = 2, column = 1)

canvas = FigureCanvasTkAgg(fig, master = window)  
# run the gui
window.mainloop()
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