1、首先打開GOOGLE地圖,搜索進入所需位置的地形圖中。
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2、將所需要的地形范圍盡量放大,使用google地圖的距離測量工具測量盡可能長的距離(鼠標右鍵——測量距離——再選殲輪行擇第二點左鍵),并使用截圖軟件對所需范圍截圖,并保存成JPG格式。
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3、打開CAD地形圖,輸入ATTACH命令,加載上一步保存的JPG圖片至CAD中,比例大小隨意。選中加載的圖片,
輸入SC命令,鼠標左鍵選擇基點——R(參氏嘩照)——指定參照長度靜(選取圖片中測量距離的兩點)——指定新的長度(此處輸入圖片中測量的長度2560米),即完成圖片大小縮放至CAD圖中尺寸。
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4、找一個對應點(例如兩河道、道路交點,樓房角點等),將圖片移動到CAD矢量圖上。
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5、此時可能圖片覆蓋在CAD圖上邊了,導致無法看到矢量圖。選中圖片輸入DR命令——B,將圖片置于底層。
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6、再根據兩圖建筑物位置進行微調,完成效果圖。
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