Geometric
Operations
It is accessed through:
Vector Processing > Geometric Operation...
- Select one layer in the List of Layers
- Choose the attributes that will compose the
output layer (skip this step if all attributes are desirable)
- Select
the attributes in the Available
Properties list.
- Move the selected attributes to Used
Properties list.
- Click Next.
- Choose the operation(s)/methdology and output layer name/repository:
- Operations:
- Convex Hull / Centroid / Minimum Bounding Rectangle (MBR) - Each operation will generate a geometry attribute in a distinct output layer suffixed by the operation name.
- Area / Line / Perimeter - These
operations will generate numeric attributes in all output layers generated.
- Methodology:
- All Objects - Selects all layer
objects to perform the operation.
- Aggregated Objects - it aggregates
all objects (generating only one) to perform the operation.
- By Attributes - it aggregates
the objects with the same attribute in groups
and perform the operation over the groups.
- Output: Inform the Output Repository
- Clicking on
to select the output
directory and inform the new layer name, or
- Clicking on
to select the Data Source repository and after
- Inform the new Layer
Name to store the operation result.
- Click Finish to perform the operation, Back to change some parameters or Cancel to close the interface.