Update app.py

app.py

@@ -14,9 +14,10 @@ def convert_to_meters(value, unit):
 def draw_floor_plan(length, width, unit):
     fig, ax = plt.subplots(figsize=(8, 8))
     ax.plot([0, length, length, 0, 0], [0, 0, width, width, 0], marker='o', color='blue')
-    ax.set_xlim(-1, length + 1)
-    ax.set_ylim(-1, width + 1)
-    ax.set_aspect('equal', adjustable='box')
+    ax.set_xlim(-0.1 * length, 1.1 * length)
+    ax.set_ylim(-0.1 * width, 1.1 * width)
+    ax.set_aspect('equal', adjustable='datalim')
+    ax.grid(True, linestyle='--', alpha=0.6)
     ax.set_title(f"Floor Plan ({unit})")
     ax.set_xlabel(f"Length ({unit})")
     ax.set_ylabel(f"Width ({unit})")