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# -*- coding: utf-8 -*-
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# Time : 2023/8/9 10:20
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# Author : lirunsheng
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# User : l'r's
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# Software: PyCharm
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# File : X4.py
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# -*- encoding: utf-8 -*-
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"""
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@Author: packy945
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@FileName: main.py
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@DateTime: 2023/5/30 15:29
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@SoftWare: PyCharm
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"""
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import sys
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from fitting import *
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import numpy as np
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import data as gl_data
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import input
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import tkinter as tk
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from tkinter import *
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import tkinter.filedialog # 注意次数要将文件对话框导入
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global Q_root,F_root
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global root_window
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global label1,label2,label3
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def window():
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global root_window
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global label1, label2, label3
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root_window = Tk()
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root_window.title('函数拟合')
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root_window.geometry('900x600') # 设置窗口大小:宽x高,注,此处不能为 "*",必须使用 "x"
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# 设置主窗口的背景颜色,颜色值可以是英文单词，或者颜色值的16进制数,除此之外还可以使用Tk内置的颜色常量
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root_window["background"] = "white"
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root_window.resizable(0, 0) # 防止用户调整尺寸
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label1 = tk.Label(root_window, text="样本数据\n集文件", font=('Times', 8), bg="white",
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width=13, height=3, # 设置标签内容区大小
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padx=0, pady=0, borderwidth=0, )
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label1.place(x=10, y=4) # 设置填充区距离、边框宽度和其样式（凹陷式）
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label3 = tk.Label(root_window, text="", font=('Times', 8), bg="white", fg="black",
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width=39, height=2, padx=0, pady=0, borderwidth=0, relief="ridge", highlightcolor="blue")
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label3.place(x=122, y=10)
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# 使用按钮控件调用函数
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tk.Button(root_window, text="装载", relief=RAISED, command=lambda: askfile()).place(x=370, y=12)
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label2 = tk.Label(root_window, text="拟合曲线类型", font=('Times', 12), bg="white",
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width=20, height=3, # 设置标签内容区大小
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padx=0, pady=0, borderwidth=0, )
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# 设置填充区距离、边框宽度和其样式（凹陷式）
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label2.place(x=450, y=4)
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gl_data.Canvas2 = tk.Canvas(root_window, bg='white', width=450, height=330)
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gl_data.Canvas2.place(x=4, y=60)
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# 定义一个处理文件的相关函数
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def askfile():
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# 从本地选择一个文件，并返回文件的路径
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filename = tkinter.filedialog.askopenfilename()
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if filename != '':#若选中了一个文件，则对文件进行读取
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label3.config(text=filename)#显示文件路径
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read_sample_data(filename)#将文件读取并存到sampleData中
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# print_sample_data(filename)#将文件读取并逐行输出
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selfdata_show(gl_data.X, gl_data.Y, gl_data.LOW, gl_data.HIGH)
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else:#若未选择文件，则显示为空
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label3.config(text='')
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def print_sample_data(file_path):#打开对应文件
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with open(file_path, 'r') as file:
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for line in file:#逐行读取文件
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line = line.strip('\n')#移除换行符
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sx, sy = line.split(' ')#以空格分割x，y
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print(f'sx: {float(sx)}, sy: {float(sy)}')#将sx、sy转换为浮点数并打印
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def read_sample_data(file_path):
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x, y = [], []#初始化x，y
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with open(file_path, 'r') as file:
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for line in file:#逐行读文件
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line = line.strip('\n')#移除换行符
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sx, sy = line.split(' ')#以空格分割x，y
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x.append(float(sx))#将sx转换为浮点数并加入数组
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y.append(float(sy))#将sy转换为浮点数并加入数组
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gl_data.X, gl_data.Y = np.array(x), np.array(y)#x，y数组转为array并赋值给全局变量
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def buttons():
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# 随机生成样本点并显示
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b_dot = tk.Button(root_window, text="生成\n数据集", relief=RAISED, bd=4, bg="white", font=("微软雅黑", 10),
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command=lambda: generate_and_plot_sample_data(gl_data.LOW, gl_data.HIGH))
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b_dot.place(x=455, y=410)
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# 显示当前样本点
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b_show = tk.Button(root_window, text="显示\n数据集", relief=RAISED, bd=4, bg="white", font=("微软雅黑", 10),
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command=lambda: selfdata_show(gl_data.X, gl_data.Y, gl_data.LOW, gl_data.HIGH))
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b_show.place(x=510, y=410)
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# 显示数据集与曲线
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b_line = tk.Button(root_window, text="显示数据\n集与曲线", relief=RAISED, bd=4, bg="white", font=("微软雅黑", 10),
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command=lambda: draw_dots_and_line(gl_data.Xian_index, gl_data.LOW, gl_data.HIGH, gl_data.X, gl_data.Y))
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b_line.place(x=565, y=410)
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# 手动输入数据集
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b_input = tk.Button(root_window, text="手动输入数据集", relief=RAISED, bd=4, bg="white", pady=7, font=("微软雅黑", 13),
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command=lambda: input.input_num(root_window))
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b_input.place(x=633, y=410)
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# 拟合并输出拟合结果
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b_fit = tk.Button(root_window, text="拟合", relief=RAISED, bd=4, bg="white", pady=7, font=("微软雅黑", 13),
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command=lambda: fit_data(gl_data.Xian_index, gl_data.X, gl_data.Y))
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b_fit.place(x=771, y=410)
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def show_fit():
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L = tk.Label(root_window, text='结果输出：', bg='white', font=("微软雅黑", 16)
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, anchor=W)
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L.place(x=20, y=480, width=100, height=30)
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ans = tk.Label(root_window, text=gl_data.Out, font=("微软雅黑", 14)
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, anchor=W, justify='left')
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ans.place(x=120, y=480, width=760, height=100)
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print(gl_data.Out)
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def fit_data(xian_index, sx, sy):
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# gl_data.yvals_pow = []
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cur = function.Fun[xian_index] # 装载正在选择的函数
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func = cur.get_fun()#获取当前函数func
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popt, pcov = curve_fit(func, sx, sy)# 用curve_fit来对点进行拟合
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yvals_pow = func(gl_data.X, *popt)
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rr = gl_data.goodness_of_fit(yvals_pow, gl_data.Y)# 计算本次拟合的R*R值，用于表示拟合优度
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# 输出拟合后的各个参数值
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ans = '\n函数系数：'
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for i in range(cur.variable):
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if i == 4:
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ans += '\n'
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if i != 0:
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ans += ', '
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ans += chr(ord('a') + i) + '=' + '{:.2e}'.format(popt[i]) # str(round(gl_data.popt[i], 3))
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gl_data.Out = '函数形式：' + cur.name + ' '
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gl_data.Out += cur.demo
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gl_data.Out += ans
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gl_data.Out += '\n拟合优度(R\u00b2)：' + str(round(rr, 5))
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show_fit()# 显示函数信息到输出框
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def change_Q(no):
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gl_data.Quadrant = no #更改全局变量的象限显示
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if no:#若为一象限，则修改显示下限为0
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gl_data.LOW = 0
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else:#若为四象限，则修改显示下限为-gl_data.maxV
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gl_data.LOW = -gl_data.MAXV
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q_button()#更新象限显示面板
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def q_button():
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r = 7.5
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rr = 2.5
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for widget in Q_root.winfo_children():
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widget.destroy()
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q_cv = tk.Canvas(Q_root, width=400, height=50)
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q_cv.place(x=0, y=0)
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l = tk.Label(Q_root, text='坐标轴', bd=0, font=("微软雅黑", 16)
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, anchor=W)
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l.place(x=20, y=0, width=80, height=50,)
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# 四象限按钮
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b1 = tk.Button(Q_root, text='四象限', bd=0, font=("微软雅黑", 16)
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, command=lambda: change_Q(0), anchor=W)
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b1.place(x=170, y=0, width=80, height=50,)
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# 一象限按钮
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b2 = tk.Button(Q_root, text='一象限', bd=0, font=("微软雅黑", 16)
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, command=lambda: change_Q(1), anchor=W)
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b2.place(x=320, y=0, width=80, height=50,)
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# 绘制标记框
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q_cv.create_oval(140 - r, 25 - r, 140 + r, 25 + r
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, fill="white", width=1, outline="black")
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q_cv.create_oval(290 - r, 25 - r, 290 + r, 25 + r
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, fill="white", width=1, outline="black")
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# 根据当前的象限选择值来填充标记框
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if gl_data.Quadrant == 0:
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q_cv.create_oval(140 - rr, 25 - rr, 140 + rr, 25 + rr
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, fill="black", width=1, outline="black")
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else:
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q_cv.create_oval(290 - rr, 25 - rr, 290 + rr, 25 + rr
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, fill="black", width=1, outline="black")
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def change_f(no):
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gl_data.Xian_index = no#设置全局函数编号为该函数
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f_button()#重新绘制函数显示界面
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def f_button():
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r = 7.5#设置按钮大小
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rr = 2.5#设置按钮大小
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for widget in F_root.winfo_children():
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widget.destroy()#清空原有按钮
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f_cv = tk.Canvas(F_root, width=400, height=330)#新建画布
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f_cv.place(x=0, y=0)#放置画布
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f_cv.create_rectangle(2, 2, 398, 328, fill='white', outline="#0099ff")#设置画布边框及底色
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cur = 0#函数计数
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for fun in function.Fit_type_library:#遍历函数库
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f = function.Fit_type_library.get(fun)#获取函数具体信息
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if function.Show[f[0]] == 1:# 如果show为1则显示
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f_cv.create_oval(20 - r, 20 + 15 + cur * 30 - r, 20 + r, 20 + 15 + cur * 30 + r
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, fill="white", width=1, outline="black")# 绘制标记框
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if f[0] == gl_data.Xian_index:# 若选择为当前函数则标记
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f_cv.create_oval(20 - rr, 20 + 15 + cur * 30 - rr, 20 + rr, 20 + 15 + cur * 30 + rr
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, fill="black", width=1, outline="black")
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# 绘制切换按钮,单击则将当前使用函数切换为该函数
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button = tk.Button(F_root, text=f[2] + ' ' + f[1], bd=0, bg="white", font=("微软雅黑", 12)
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, command=lambda x=f[0]: change_f(x), anchor=W)
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button.place(x=40, y=20 + cur * 30, width=300, height=30)
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cur += 1#计数加一
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def close_window():
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sys.exit()
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def main():
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global Q_root, F_root,root_window
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gl_data.X = []
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gl_data.X = []
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window()
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function.f_read()
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# 函数选择相关界面
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F_root = tk.Frame(root_window, width=400, height=330, bg='white', )
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F_root.place(x=490, y=60)
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# 象限选择相关界面
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Q_root = tk.Frame(root_window, width=400, height=50, bg='white', )
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Q_root.place(x=20, y=410)
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buttons()
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f_button()
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q_button()
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show_fit()
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root_window.protocol("WM_DELETE_WINDOW", close_window)
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root_window.mainloop()
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if __name__ == '__main__':
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main()
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pass
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