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科普 | 地形图图例汇总,测绘人识图绘图必备
地形图(topographic map)指的是地表起伏形态和地理位置、形状在水平面上的投影图。具体来讲,将地面上的地物和地貌按水平投影的方法(沿铅垂线方向投影到水平面上),并按一定的比例尺缩绘到图纸上,这种图称为地形图。如图上只有地物,不表示地面起伏 ...
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