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Vector → Open Vector File →选择要裁剪地区矢量文件→ Load Selected →选择要裁剪的影像图→OK →File → Export Active Layer to ROIs→ Convert all records of an EVFLayer to one ROI→ OK→Basic Tools →Subset Data Via ROIs→选择图像→全选→ choose →OK→在Spatial Subset via ROI Paraments对话框中 Select all Items→Mask pixels outside of ROI?改为yes→选择存储位置→OK
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