import tkinter as tk
from tkinter import filedialog
from matplotlib.figure import Figure
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import pandas as pd

class DataApplication(tk.Tk):
    def __init__(self):
        super().__init__()

        # Create the buttons
        load_button = tk.Button(self, text='Load Data', command=self.load_data)
        load_button.pack()

        clean_button = tk.Button(self, text='Clean Data', command=self.clean_data)
        clean_button.pack()

        output_button = tk.Button(self, text='Generate Output', command=self.generate_output)
        output_button.pack()

        visualize_button = tk.Button(self, text='Visualize Data', command=self.visualize_data)
        visualize_button.pack()

        # Create an empty DataFrame to store the data
        self.data = pd.DataFrame()

    def load_data(self):
        filename = filedialog.askopenfilename()
        self.data = pd.read_csv(filename)

    def clean_data(self):
        # Insert code to clean data here
        pass

    def generate_output(self):
        # Insert code to generate output here
        pass

    def visualize_data(self):
        # Insert code to visualize data here
        # This is a basic example of how to draw a plot on the GUI
        figure = Figure(figsize=(5, 4), dpi=100)
        plot = figure.add_subplot(1, 1, 1)
        plot.plot(self.data)
        canvas = FigureCanvasTkAgg(figure, self)
        canvas.draw()
        canvas.get_tk_widget().pack()

app = DataApplication()
app.mainloop()