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Panky Laptop
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| import pandas as pd # untuk manipulasi data | ||
| import numpy as np # untuk operasi numerik | ||
| import tkinter as tk # untuk antarmuka pengguna grafis | ||
| from tkinter import ttk, filedialog, messagebox # untuk widget, dialog file, dan pesan di tkinter | ||
| import warnings # untuk menangani peringatan | ||
| from statsmodels.tsa.holtwinters import SimpleExpSmoothing # untuk model peramalan sederhana | ||
| import matplotlib.pyplot as plt # untuk plotting grafik | ||
| from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg # untuk integrasi matplotlib dengan tkinter | ||
|
|
||
| class SalesPredictionApp: | ||
| def __init__(self, root): | ||
| self.root = root | ||
| self.root.title("Sales Prediction") | ||
| self.root.geometry("1280x720") | ||
|
|
||
| self.data = None # untuk menyimpan data yang diimpor | ||
| self.predictions = None # untuk menyimpan prediksi penjualan | ||
| self.mse_values = None # untuk menyimpan nilai MSE | ||
|
|
||
| self.create_widgets() # membuat widget GUI | ||
| self.load_default_file() # memuat file default jika ada | ||
|
|
||
| def create_widgets(self): | ||
| # Label Visualisasi | ||
| self.label = tk.Label(self.root, text="Visualisasi", font=("Arial", 24)) | ||
| self.label.pack(pady=10) | ||
|
|
||
| # Frame untuk ComboBox dan Tabel di sebelah kiri | ||
| self.left_frame = tk.Frame(self.root) | ||
| self.left_frame.pack(side=tk.LEFT, fill=tk.Y, padx=10, pady=10) | ||
|
|
||
| # ComboBox untuk memilih item | ||
| self.combobox_label = tk.Label(self.left_frame, text="Pilih Barang", font=("Arial", 14)) | ||
| self.combobox_label.pack(pady=5) | ||
| self.combobox = ttk.Combobox(self.left_frame, state="readonly") | ||
| self.combobox.pack(pady=5) | ||
| self.combobox.bind("<<ComboboxSelected>>", self.update_predictions) | ||
|
|
||
| # Treeview untuk menampilkan prediksi dan MSE | ||
| self.tree = ttk.Treeview(self.left_frame, columns=("alpha", "prediction", "mse"), show="headings") | ||
| self.tree.heading("alpha", text="Alpha") | ||
| self.tree.heading("prediction", text="Prediction") | ||
| self.tree.heading("mse", text="MSE") | ||
| self.tree.pack(pady=10) | ||
|
|
||
| # Frame untuk Grafik di sebelah kanan | ||
| self.right_frame = tk.Frame(self.root) | ||
| self.right_frame.pack(side=tk.RIGHT, fill=tk.BOTH, expand=True, padx=10, pady=10) | ||
|
|
||
| # Figure untuk plotting grafik | ||
| self.figure = plt.Figure(figsize=(5, 5), dpi=100) | ||
| self.ax = self.figure.add_subplot(111) | ||
| self.canvas = FigureCanvasTkAgg(self.figure, master=self.right_frame) | ||
| self.canvas.get_tk_widget().pack(fill=tk.BOTH, expand=True) | ||
|
|
||
| # Tombol untuk memilih file | ||
| self.file_button = tk.Button(self.root, text="Pilih File", command=self.load_file) | ||
| self.file_button.pack(pady=20) | ||
|
|
||
| def load_default_file(self): | ||
| try: | ||
| self.data = pd.read_csv("dataset.csv") # memuat data dari file CSV default | ||
| self.process_data() # memproses data yang diimpor | ||
| except Exception as e: | ||
| messagebox.showerror("Error", f"Gagal memuat file default: {e}") | ||
|
|
||
| def load_file(self): | ||
| file_path = filedialog.askopenfilename(filetypes=[("CSV files", "*.csv")]) # membuka dialog file untuk memilih file CSV | ||
| if file_path: | ||
| try: | ||
| self.data = pd.read_csv(file_path) # memuat data dari file CSV yang dipilih | ||
| self.process_data() # memproses data yang diimpor | ||
| except Exception as e: | ||
| messagebox.showerror("Error", f"Gagal memuat file: {e}") | ||
| else: | ||
| messagebox.showerror("Error", "File tidak valid") | ||
|
|
||
| def process_data(self): | ||
| self.data['tanggal'] = pd.to_datetime(self.data['tahun'].astype(str) + '-' + self.data['bulan'].astype(str) + '-01') # menggabungkan tahun dan bulan menjadi kolom tanggal | ||
| self.data.set_index('tanggal', inplace=True) # mengatur kolom tanggal sebagai indeks | ||
| self.update_combobox() # memperbarui pilihan di combobox | ||
|
|
||
| def update_combobox(self): | ||
| items = self.data['barang'].drop_duplicates().tolist() # mendapatkan daftar barang unik | ||
| self.combobox['values'] = items # mengatur nilai combobox | ||
| if items: | ||
| self.combobox.current(0) # memilih item pertama secara default | ||
| self.update_predictions() # memperbarui prediksi berdasarkan item yang dipilih | ||
|
|
||
| def update_predictions(self, event=None): | ||
| selected_item = self.combobox.get() # mendapatkan item yang dipilih dari combobox | ||
| if selected_item: | ||
| item_data = self.data[self.data['barang'] == selected_item]['penjualan'].resample('M').sum() # meresampling data penjualan per bulan | ||
| self.predictions = {} | ||
| self.mse_values = {} | ||
| alphas = np.arange(0.1, 1.0, 0.1) # menentukan rentang nilai alpha | ||
| with warnings.catch_warnings(): | ||
| warnings.simplefilter("ignore") | ||
| for alpha in alphas: | ||
| model = SimpleExpSmoothing(item_data).fit(smoothing_level=alpha) # membuat model SimpleExponentialSmoothing | ||
| pred = model.fittedvalues # mendapatkan nilai prediksi yang sesuai dengan data aktual | ||
| pred = pd.concat([pred, model.forecast(1)]) # menambahkan satu prediksi ke depan | ||
| self.predictions[f'{alpha:.1f}'] = round(pred.iloc[-1], 1) # menyimpan prediksi dengan pembulatan satu desimal | ||
|
|
||
| # Menghitung MSE (Mean Squared Error) | ||
| mse = ((pred[:-1] - item_data) ** 2).mean() | ||
| self.mse_values[f'{alpha:.1f}'] = mse | ||
|
|
||
| # Memilih prediksi dengan MSE terendah | ||
| best_alpha = min(self.mse_values, key=self.mse_values.get) | ||
| best_prediction = self.predictions[best_alpha] | ||
|
|
||
| self.update_table() # memperbarui tabel dengan prediksi baru | ||
| self.update_graph(item_data, best_alpha, best_prediction) # memperbarui grafik dengan prediksi baru | ||
|
|
||
| def update_table(self): | ||
| for row in self.tree.get_children(): | ||
| self.tree.delete(row) # menghapus semua baris dalam tabel | ||
| for alpha, prediction in self.predictions.items(): | ||
| mse = round(self.mse_values[alpha], 1) # Membatasi MSE menjadi 1 angka setelah koma | ||
| self.tree.insert("", "end", values=(alpha, f'{prediction:.1f}', f'{mse:.1f}')) # menambahkan baris baru ke tabel | ||
|
|
||
| def update_graph(self, item_data, best_alpha, best_prediction): | ||
| self.ax.clear() # membersihkan grafik sebelumnya | ||
| self.ax.plot(item_data, label="Penjualan Aktual") # plotting data penjualan aktual | ||
| last_date = item_data.index[-1] | ||
| forecast_index = last_date + pd.DateOffset(months=1) # menentukan indeks untuk prediksi | ||
| self.ax.plot([last_date, forecast_index], [item_data[-1], best_prediction], linestyle='--', label=f'Alpha {best_alpha}') # plotting garis prediksi | ||
| self.ax.scatter(forecast_index, best_prediction, color='red') # menambahkan titik prediksi | ||
| self.ax.legend() # menambahkan legenda | ||
| self.ax.set_title("Prediksi Penjualan Bulan Berikutnya (dengan MSE terendah)") # mengatur judul grafik | ||
| self.ax.set_xlabel("Tanggal") # mengatur label sumbu x | ||
| self.ax.set_ylabel("Penjualan") # mengatur label sumbu y | ||
| self.canvas.draw() # menggambar ulang canvas | ||
|
|
||
| if __name__ == "__main__": | ||
| root = tk.Tk() # membuat root window tkinter | ||
| app = SalesPredictionApp(root) # membuat instance dari SalesPredictionApp | ||
| root.mainloop() # menjalankan aplikasi |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| barang,tahun,bulan,penjualan | ||
| HVS A4 Sidu,2024,1,100 | ||
| HVS A4 Sidu,2024,2,35 | ||
| HVS A4 Sidu,2024,3,25 | ||
| HVS A4 Sidu,2024,4,25 | ||
| HVS A4 Sidu,2024,5,110 | ||
| HVS A4 Sidu,2024,6,100 | ||
| HVS F4 Sidu,2024,1,130 | ||
| HVS F4 Sidu,2024,2,50 | ||
| HVS F4 Sidu,2024,3,25 | ||
| HVS F4 Sidu,2024,4,35 | ||
| HVS F4 Sidu,2024,5,65 | ||
| HVS F4 Sidu,2024,6,100 | ||
| HVS A4 80 Gram Sidu,2024,1,8 | ||
| HVS A4 80 Gram Sidu,2024,2,5 | ||
| HVS A4 80 Gram Sidu,2024,3,3 | ||
| HVS A4 80 Gram Sidu,2024,4,2 | ||
| HVS A4 80 Gram Sidu,2024,5,9 | ||
| HVS A4 80 Gram Sidu,2024,6,10 | ||
| HVS F4 80 Gram Sidu,2024,1,5 | ||
| HVS F4 80 Gram Sidu,2024,2,0.614 | ||
| HVS F4 80 Gram Sidu,2024,3,0.614 | ||
| HVS F4 80 Gram Sidu,2024,4,0.47 | ||
| HVS F4 80 Gram Sidu,2024,5,5 | ||
| HVS F4 80 Gram Sidu,2024,6,4 | ||
| Kertas bergaris Folio,2024,1,1.69 | ||
| Kertas bergaris Folio,2024,2,0.85 | ||
| Kertas bergaris Folio,2024,3,1.45 | ||
| Kertas bergaris Folio,2024,4,0.67 | ||
| Kertas bergaris Folio,2024,5,3.94 | ||
| Kertas bergaris Folio,2024,6,2.35 | ||
| HVS Warna Merah F4 Sidu,2024,1,0.184 | ||
| HVS Warna Merah F4 Sidu,2024,2,0.292 | ||
| HVS Warna Merah F4 Sidu,2024,3,0.594 | ||
| HVS Warna Merah F4 Sidu,2024,4,0.314 | ||
| HVS Warna Merah F4 Sidu,2024,5,394 | ||
| HVS Warna Merah F4 Sidu,2024,6,235 | ||
| HVS Warna Hijau F4 Sidu,2024,1,0.86 | ||
| HVS Warna Hijau F4 Sidu,2024,2,0.69 | ||
| HVS Warna Hijau F4 Sidu,2024,3,0.22 | ||
| HVS Warna Hijau F4 Sidu,2024,4,0.27 | ||
| HVS Warna Hijau F4 Sidu,2024,5,1.17 | ||
| HVS Warna Hijau F4 Sidu,2024,6,1.366 | ||
| HVS Warna Kuning F4 Sidu,2024,1,0.69 | ||
| HVS Warna Kuning F4 Sidu,2024,2,0.26 | ||
| HVS Warna Kuning F4 Sidu,2024,3,0.316 | ||
| HVS Warna Kuning F4 Sidu,2024,4,0.384 | ||
| HVS Warna Kuning F4 Sidu,2024,5,0.49 | ||
| HVS Warna Kuning F4 Sidu,2024,6,0.864 | ||
| HVS Warna Biru F4 Sidu,2024,1,0.29 | ||
| HVS Warna Biru F4 Sidu,2024,2,0.174 | ||
| HVS Warna Biru F4 Sidu,2024,3,0.186 | ||
| HVS Warna Biru F4 Sidu,2024,4,0.134 | ||
| HVS Warna Biru F4 Sidu,2024,5,0.468 | ||
| HVS Warna Biru F4 Sidu,2024,6,0.314 | ||
| Kertas Bufalo Putih Crown,2024,1,2.85 | ||
| Kertas Bufalo Putih Crown,2024,2,1.9 | ||
| Kertas Bufalo Putih Crown,2024,3,2.56 | ||
| Kertas Bufalo Putih Crown,2024,4,1.67 | ||
| Kertas Bufalo Putih Crown,2024,5,1.6 | ||
| Kertas Bufalo Putih Crown,2024,6,2.54 | ||
| Kertas Bufalo Warna Crown,2024,1,3.23 | ||
| Kertas Bufalo Warna Crown,2024,2,3.28 | ||
| Kertas Bufalo Warna Crown,2024,3,3.25 | ||
| Kertas Bufalo Warna Crown,2024,4,5.43 | ||
| Kertas Bufalo Warna Crown,2024,5,6.46 | ||
| Kertas Bufalo Warna Crown,2024,6,7.05 |