Update app.py

app.py

@@ -4,8 +4,9 @@ import plotly.graph_objects as go
 import os
 from zipfile import ZipFile
 import plotly.io as pio
-from PIL import Image, ImageDraw, ImageFont
+from PIL import Image, ImageDraw
 from io import BytesIO
+import numpy as np
 
 try:
     import kaleido
@@ -71,7 +72,7 @@ def create_radar_chart(df, selected_rows, selected_columns):
         title='學生成績雷達圖',
         plot_bgcolor='white',
         paper_bgcolor='white',
-       font=dict(family="Microsoft JhengHei, Noto Sans CJK, Arial")
+        font=dict(family="Microsoft JhengHei, Noto Sans CJK, Arial")
     )
 
     return fig
@@ -80,19 +81,14 @@ def save_all_radar_charts(df, selected_columns, comparison_rows):
     """批次生成並儲存每個學生與指定比較對象的雷達圖"""
     output_dir = "radar_charts"
     os.makedirs(output_dir, exist_ok=True)
-    font_path = "msjh.ttc, arial.ttf"  # 請替換成你字體檔案的路徑
-    try:
-        font = ImageFont.truetype(font_path, size=12, encoding="utf-8")  # 設置中文字型
-    except FileNotFoundError:
-        st.error(f"找不到字型檔案: {font_path},請確保檔案路徑正確")
-        return None
+
 
     for student in df['姓名']:
         if student in comparison_rows:
             continue
 
         fig = create_radar_chart(df, [student] + comparison_rows, selected_columns)
-        img_bytes = pio.to_image(fig, format="png", engine="kaleido")
+        img_bytes = pio.to_image(fig, format="png", engine="orca") # 使用 orca
         img = Image.open(BytesIO(img_bytes)).convert("RGBA")
         background = Image.new('RGBA', img.size, (255, 255, 255, 255))
         composite = Image.alpha_composite(background, img)
@@ -103,7 +99,7 @@ def save_all_radar_charts(df, selected_columns, comparison_rows):
             if isinstance(trace, go.Scatterpolar):
                 for i, theta in enumerate(trace.theta):
                     x, y = fig.layout.polar.radialaxis.range[1] * (0.5 - 0.5*trace.r[i] / fig.layout.polar.radialaxis.range[1]) * np.cos(np.radians(90-theta)), fig.layout.polar.radialaxis.range[1] * (0.5 - 0.5*trace.r[i] / fig.layout.polar.radialaxis.range[1]) * np.sin(np.radians(90-theta))
-                    draw.text((img.width / 2 + x, img.height / 2 + y - 25), str(trace.name), font=font, fill=(0, 0, 0))
+                    draw.text((img.width / 2 + x, img.height / 2 + y - 25), str(trace.name), fill=(0, 0, 0))  # 直接使用PIL預設字型
         file_path = os.path.join(output_dir, f"{student}_comparison.png")
         composite.save(file_path)
 
@@ -148,7 +144,7 @@ def main():
                     st.error("請至少選擇一個比較對象")
                 else:
                     zip_path = save_all_radar_charts(df, selected_columns, comparison_rows)
-                    if zip_path: #check the path is valid
+                    if zip_path:
                          with open(zip_path, "rb") as f:
                             st.download_button(
                                 label="下載壓縮檔",