一类可调放大镜式地图投影

提出了一类新的变化比例尺地图投影,它具有“放大镜“的效果,可将地图上的重点地区、内宁可用较大比例尺放大表示出来而周围地区的比例尺不变。“放大镜“的边界及其形状、“放大“的方式、幅度亦可自由设计、灵活调整。此类投影可以基本概括现有的变比例尺投影,并克服了现有方法的诸多缺陷,产生更佳、更广泛的结果。

A KIND OF ADJUSTABLE MAP PROJECTION WITH"MAGNIFYING GLASS" EFFECT

:This paper proposes a new kind of variable scale map projection, which has the effect of "magnifying glass" that can depict the important regions with larger scale wh ile the scale of surrounding parts remains constant. The edge, the form and magnitude of the magnified region can be designed and adjusted freely. The proposed methed can basically include the existing variable scale projection methods and can overcome their limitations as well as to produce more optimal and wider nesults.