零值与未知分开

Keep zero distinct from missing

分类：城乡规划/输入与操作/局部编辑

提示词

保持零值、缺测与不适用区域的视觉区别，不将它们统一涂成同一种背景色。

Preserve visual distinctions among zero, missing, and not-applicable areas instead of giving them one background color.

标签：城乡规划、改图范围