Crop
Layer clipping refers to the function of using Overlay Dataset (Clip Dataset) to extract part of the feature (point, line, surface) set from Source Dataset (Clip Dataset). For a detailed description of the clipping operator, please refer to the Overlay Analysis operator .
Instructions for use
- The type of Clip Dataset must be Region Dataset. The type of Clip Dataset can be Point, Line, Region Dataset.
- In a Clip Dataset, only objects within the Clip Dataset polygon are output to the Result Dataset.
Function entrance
- Spatial Analysis tab-> Vector Analysis-> Overlay Analysis-> Crop.
- Toolbox-> Vector Analysis-> Overlay Analysis-> Crop.
Parameter Description
- Source Data: Select the Datasource where the Clip Dataset is located and the clipped Dataset.
- Overlay Data: Select the Datasource and Clip Dataset where the Clip Dataset is located.
- Result Dataset: Select the Datasource where the Result Dataset is stored. Specify the name of the Result Dataset.
- Tolerance: After the superposition operation, if the distance between two nodes is less than this value, the two nodes will be merged. The default value of this value is the Fuzzy default value of the Clip Dataset. This value can be set in Fuzzy under Tolerances in the Vector Dataset tab of the Dataset Properties dialog box.
If Fuzzy is not set in the Dataset Properties, the tolerance defaults here are relative to the Dataset's coordinate system, as described in the Tolerance description .
- Compare Results: Select the " Compare Results" check box to display the Clip Dataset, Clip Dataset and Result Dataset in a new Map at the same time, so that the user can compare the results.
- Keep Single Object: If the line is within multiple face objects (face objects overlap) or at the boundary, check " Keep Single Object" to return only one object. Otherwise, return multiple objects.
Precautions
Before performing Overlay Analysis, please ensure that the data Projection of the operation is consistent, otherwise it may result in overlay Analysis failed.
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