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80 lines
2.3 KiB
80 lines
2.3 KiB
11 months ago
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import tkinter as tk
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import numpy as np
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import matplotlib.pyplot as plt
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from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
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def plot_function(func_str, num_points, step, multiplier, x_func):
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try:
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x_values = np.linspace(x_func[0], x_func[1], num_points)
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func = lambda x: eval(func_str)
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y_values = func(x_values * multiplier)
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ax.clear()
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ax.plot(x_values, y_values, label=f'{func_str} ({x_func[0]} to {x_func[1]})')
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ax.legend()
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canvas.draw()
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except Exception as e:
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print(f"Error: {e}")
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def on_update():
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try:
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func_str = entry_function.get()
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num_points = int(entry_num_points.get())
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step = float(entry_step.get())
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multiplier = float(entry_multiplier.get())
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x_func = [float(entry_x_start.get()), float(entry_x_end.get())]
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plot_function(func_str, num_points, step, multiplier, x_func)
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except ValueError:
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pass
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# 创建主窗口
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root = tk.Tk()
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root.title("Function Plotter")
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# 创建图形区域
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fig, ax = plt.subplots(figsize=(5, 4))
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canvas = FigureCanvasTkAgg(fig, master=root)
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canvas_widget = canvas.get_tk_widget()
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canvas_widget.grid(row=0, column=1, rowspan=10)
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# 添加控件
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tk.Label(root, text="Function:").grid(row=0, column=0)
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entry_function = tk.Entry(root)
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entry_function.grid(row=0, column=1)
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entry_function.insert(0, "np.sin(x)")
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tk.Label(root, text="Number of Points:").grid(row=1, column=0)
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entry_num_points = tk.Entry(root)
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entry_num_points.grid(row=1, column=1)
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entry_num_points.insert(0, "100")
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tk.Label(root, text="Step Size:").grid(row=2, column=0)
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entry_step = tk.Entry(root)
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entry_step.grid(row=2, column=1)
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entry_step.insert(0, "0.1")
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tk.Label(root, text="Multiplier:").grid(row=3, column=0)
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entry_multiplier = tk.Entry(root)
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entry_multiplier.grid(row=3, column=1)
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entry_multiplier.insert(0, "1.0")
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tk.Label(root, text="X Start:").grid(row=4, column=0)
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entry_x_start = tk.Entry(root)
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entry_x_start.grid(row=4, column=1)
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entry_x_start.insert(0, "-10.0")
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tk.Label(root, text="X End:").grid(row=5, column=0)
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entry_x_end = tk.Entry(root)
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entry_x_end.grid(row=5, column=1)
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entry_x_end.insert(0, "10.0")
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update_button = tk.Button(root, text="Update Plot", command=on_update)
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update_button.grid(row=6, column=0, columnspan=2)
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# 初始绘制
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on_update()
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# 运行主循环
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root.mainloop()
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