update legend show

app.py

@@ -22,10 +22,13 @@ if len(uploaded_files) == 3:
         scan_lines.append(scan_line)
 
     plt.figure(figsize=(10, 6))
+    line_styles = ['-', '--', '-.'] 
+    colors = ['b', 'g', 'r'] 
     for i, (line, file) in enumerate(zip(scan_lines, uploaded_files)):
-        plt.plot(line, label=f'{file.name}')
+        plt.plot(line, label=f'{file.name}', linestyle=line_styles[i % len(line_styles)], color=colors[i % len(colors)], alpha=0.7, linewidth=1.5)
+        
     plt.xlabel('Pixel Position')
     plt.ylabel('Pixel Value')
     plt.title('Comparison of Scan Lines Across Images')
-    plt.legend(loc='upper right', framealpha=0.5)
+    plt.legend(loc='upper left')
     st.pyplot(plt)