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Menu | Select > Features By > Geometry Comparison |
Tool |
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Select features on one layer (target layer), using feature geometries from a source. This source can be a different layer, or a selection on the same layer.
If a layer is the source, all features on that layer will be referenced. To limit the geometries used, create a filter layer from the source data, then select that filter layer as the geometry source.
A selection can be created using a variety of operators. For example, you can use the Crosses operator to select all features on the target layer that cross a selected area on the source layer.
Understanding the geometry of a feature makes it easier to select operators. The geometry of a feature consists of the following:
• Boundary
• Interior
• Exterior
• Geometric dimensions (1-dimensional, 2‑dimensional, and so on).
These components differ for each of the main feature types and are used by the operators to determine which features meet the selection criteria. The table below explains the geometry component for each feature type.
Feature Type | Description |
|---|---|
Point Multi-point | • Boundary: none, point features have no boundary • Interior: the point itself • Exterior: the space outside the point • Dimensions: 0, points have neither a length, width nor height |
Line Multi-line | • Boundary: the two end points of the line • Interior: the points between the two end points of the line • Exterior: the space outside the line • Dimensions: 1, length |
Area Multi-area | • Boundary: the inner and outer polygon boundaries of the area • Interior: the space within the polygon’s boundaries • Exterior: the space outside the polygon's boundaries (including the area inside any inner rings) • Dimensions: 2, width and height |
If an area feature contains holes, the area has both an inner boundary and an outer boundary, with the inner ring being the inner boundary. See Add Inner Rings to Areas for information on inner rings. |
Related commands:
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Interface
Options | Description | |
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Target | The layer that contains the features that you want to select. Select from the list of all open layers that contain geometry features. | |
Operators | Define a condition using one or more of the following operators: | |
• Intersects: Select features that are fully inside or which touch or cross the boundaries of an area. The boundaries and/or interiors of the target features and the source geometry intersect in any way. This is the opposite of Is Disjoint. |
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• Contains: Select features that contain the geometry of a feature on the source layer. The target feature contains the source geometry. Every point of the source geometry is contained in the boundary of the target feature, and at least one point of the source geometry must be on the interior of the target feature. This is the opposite of Is Within. |
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• Covers: Select a feature that covers one or more other features. These can be: • Area features that cover area, line, point or sounding features. • Line features that cover line, point or sounding features. • Point/sounding features that cover (are equal to) point/sounding features. The target feature completely covers the source geometry. All points of the source geometry are on the boundary or on the interior of the target feature. This is the opposite of Is Covered By. |
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• Overlaps: Select features that overlap features on the source layer. The target feature and source geometry overlap if they have the same dimension and their interiors intersect, but the geometry of the intersection is not equal to either the source or the target. |
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• Is Disjoint: Select features that do not touch features in the source layer. Neither the boundaries nor the interiors of the source geometry intersect with the target features. This is useful for identifying features that are outside of the data extents. This is the opposite of Intersects. |
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• Is Within: Select features whose geometry is completely contained within the geometry of a feature on the source layer. The target feature is within the source geometry. Every point of the target feature is within the boundary of the source geometry, and at least one point of the target feature must be on the interior of the source geometry. This is the opposite of Contains. |
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• Is Covered By: Select an area feature that is covered by one or more area features. The area cannot be covered by a single area but can extend over more than one area feature. The target feature is completely covered by the source geometry. All points of the target feature are on the boundary or on the interior of the source geometry. This is the opposite of Covers. |
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• Crosses: Select Features that cross the boundary of features in the source layer. The target feature and source geometry cross if their interiors intersect, and the geometry of that intersection has a dimension that is less than either the source or the target. |
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• Is Equal to: Select features that are identical to features on the source layer. The source geometry and the target feature have the same boundary and interior. |
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• Touches: Select features that touch but do not overlap the features in the source layer. The boundaries of the source geometry and the target feature intersect but the interiors do not intersect. |
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Only select data that satisfies all operators | This is enabled if more than one operator is selected. On: Only features that meet all the conditions will be selected. Off: Features that meet any one of the conditions will be selected. | |
Source | The layer that contains the feature geometries used to select features on the Target layer. Select from the list. You can select from all open layers that contain geometry features, or | |
Expression | Displays the expression as you build it. by selecting and defining options. | |
Procedure
1. [Optional] Select features on the source layer.
Only the selected features will be used to select features on the target layer.
2. Select the Select by Geometry Comparison command.
The Select by Geometry Comparison dialog box is displayed.
3. Select the Target.
4. Select the Source.
Your selections are displayed in the Expression field.
5. Select one or more operators.
6. Set any other necessary options.
7. Click OK.
Any features on the target layer that meet the conditions will be selected.
