Update
Feature Description
Layer update refers to the function where the overlay dataset (update data set) replaces the overlapping part with the source dataset (updated dataset). For a detailed introduction to the update tool, please refer to the Overlay Analysis Tool.
- The types of both the update data set and the updated dataset must be region datasets.
- In the updated dataset, the parts that overlap with the update data set are replaced and saved in the result dataset.
Function Entry
- Spatial Analysis tab -> Vector Analysis -> Overlay Analysis -> Update.
- Toolbox -> Vector Analysis -> Overlay Analysis -> Update.
Parameter Description
- Source Dataset: Select the datasource where the updated dataset is located and the dataset to be updated.
- Overlay Data: Select the datasource where the update data set is located and the updating dataset.
- Tolerances: 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 default fuzzy tolerance of the clipped dataset. This value can be set under Tolerances > Fuzzy in the Vector Dataset tab of the Dataset Properties dialog box.
If the fuzzy tolerance is not set in the Dataset Properties, the default tolerance here is related to the coordinate system of the dataset. For details, please refer to Tolerance Description.
- Result Data: Select the datasource to store the result dataset and specify the name of the result dataset.
Related Topics