Update app.py

app.py

@@ -62,8 +62,8 @@ def plot_graph(file):
     
     # クラスターの中心に印と文字を追加
     for i, center in enumerate(centers):
-        plt.scatter(center[0], center[1], c='#ff0000', s=50, alpha=0.75, marker='o')
-        plt.text(center[0], center[1]+4, f'Cluster {i}', color='#ff0000', fontsize=16, ha='center', va='center')
+        plt.scatter(center[0], center[1], c='#ff0000', s=50, alpha=0.6, marker='o')
+        plt.text(center[0], center[1] + 5, f'Cluster {i}', color='#ff0000', fontsize=32, alpha=0.6, ha='center', va='center')
 
     # XY軸の表示なし
     plt.axis('off')