Erase
Feature Description
Layer erase refers to the function of using the overlay dataset (the erase dataset) to erase features that overlap with the source dataset (the dataset to be erased). For a detailed introduction to the erase tool, please refer to the Overlay Analysis Tool.
- The type of the erase dataset must be a region dataset, while the type of the dataset to be erased can be a point, line, or region dataset.
- In the dataset to be erased, only objects that fall outside the polygons of the erase dataset will be output to the result dataset.
Function Entry
- Spatial Analysis tab -> Vector Analysis -> Overlay Analysis -> Erase.
- Toolbox -> Vector Analysis -> Overlay Analysis -> Erase.
Parameter Description
- Source Dataset: Select the datasource where the dataset to be erased is located and the dataset to be erased.
- Overlay Data: Select the datasource where the erase dataset is located and the erase dataset.
- Result Data: Select the datasource to store the result dataset and specify the name of the result dataset.
- Tolerances: The default tolerance value will be automatically provided based on the datasets involved in the analysis.
After the overlay operation, if the distance between two nodes is less than this value, the two nodes will be merged. The default value of this parameter is the fuzzy default value of the clipped dataset (this value is set under Tolerances > Fuzzy in the Vector Dataset tab of the Dataset Properties dialog box).
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