Xtools,可以看作ArcGIS的一个扩展模块,不过是free的,一些高手的杰作,可以完成 Calculate Area, Perimeter, Length, Acres, Hectares Transfer / Convert Selected Features Convert Multipart Shapes To Single Part Convert Polygons to Polylines Make One Polygon From Polylines Make One Polygon From Points Make One PolyLine From Points Convert Graphics To Shapes Convert Shapes to CentroidsErase Features (ERASE) Identity (IDENTITY) Update Polygon Layer (UPDATE) Table Statistics Summarize Multiple Fields Delete Multiple Fields Export Table to Excel Spreadsheet Add X,Y Coordinates 等功能