ArcGIS10.0操作之10—向量化遇到的問題（The feature can not be created. The geometry is valid）

這是自己在向量化過程中遇到的問題，自己向量化區時，彈出如下對話方塊

 

 

 

自己在ESRI英文論壇上找到了答案：原文如下

 

Your screenshot shows that no coordinate system has been set for the data frame in ArcMap, which implies there may not be a defined projection on your dataset.

This is allowable, but generally not good practise.

As John suggested, I would try exporting your LU_Existing_Outcatch featureclass to a new dataset - either shapefile or a new geodatabase featureclass.

Then ensure that this dataset has a defined projection - right-click on it in ArcCatalog and see the Coordinate System options. Let us know if you need a hand with that.

Do the same for all your other layers, including the rasters, to ensure they're all sitting in the correct geographic position.

也就是影像沒有空間參考，建議在ArcCatalog定義一個座標系統，所以在ArcCatalog中定義一個座標系統就可以了，另外在向量化前建議為所有圖層都定義上影像圖對應的座標系統。