api:dk11:delphi:gisaggregator.tgis_aggregatorclusteringhexagonalgridpointy
Table of Contents
TGIS_AggregatorClusteringHexagonalGridPointy class
DK for Delphi | GisAggregator.TGIS_AggregatorClusteringHexagonalGridPointy | Classes | Constructors | Fields | Methods | Properties
This class implements the clustering method using a pointy-topped hexagonal grid.
Syntax
// Delphi type TGIS_AggregatorClusteringHexagonalGridPointy = class( TGIS_AggregatorClusteringHexagonalGridAbstract ) end;
// C++ Builder class PASCALIMPLEMENTATION TGIS_AggregatorClusteringHexagonalGridPointy : public TGIS_AggregatorClusteringHexagonalGridAbstract { };
Inheritance
→ TGIS_BaseObjectDisposable → TGIS_DynamicAggregatorAbstract → TGIS_AggregatorAbstract → TGIS_AggregatorClusteringAbstract → TGIS_AggregatorClusteringHexagonalGridAbstract
Constructors
Inherited
Overrides
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| Create | public | Initialize aggregator instance for specified layer. (Overrides TGIS_AggregatorClusteringHexagonalGridAbstract.Create) |
|
Fields
Inherited
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| useConfig | protected | If true then initialization of visual appearance is blocked because it is going to be read from a project/config file. (Inherited from TGIS_DynamicAggregatorAbstract) |
|
Methods
Inherited
Overrides
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| AddShape(TGIS_Shape; TObject) | public | Add aggregated shape with optional attribute context. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| AddShape(TGIS_Shape; Variant; TGIS_UidArray) | public | Add aggregated shape with metric value and source UIDs. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| applyConfigOptions | protected | Load aggregator configuration from config file. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Copy | public | Create independent copy of aggregator with optional new layer binding. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| HideShape | public | Mark shape as hidden during aggregation cycle. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Prepare | public | Generate aggregated shapes for visible extent. (Inherited from TGIS_AggregatorAbstract) |
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| SetUp | public | Initialize aggregator state. (Inherited from TGIS_AggregatorAbstract) |
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| storeConfigOptions | protected | Save aggregator configuration to config file. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| useShapeType | protected | Declare shape type produced by aggregator. (Inherited from TGIS_DynamicAggregatorAbstract) |
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Properties
Inherited
Protected
Private
| Name | Visibility | Description | |
|---|---|---|---|
| Caption | public | User-friendly display name for aggregator (translated). (Inherited from TGIS_DynamicAggregatorAbstract) |
|
| IsPreparing | public | True if aggregator is currently executing Prepare() method. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Layer | public | Reference to parent layer hosting aggregator. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Name | public | Unique internal identifier for aggregator type. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Radius | public | Spatial radius for aggregation clustering. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| RadiusAsText | public | Human-readable representation of Radius property with units. (Inherited from TGIS_DynamicAggregatorAbstract) |
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| Threshold | public | Minimum number of shapes required to form a single aggregated result. (Inherited from TGIS_DynamicAggregatorAbstract) |
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Remarks
 |  |  |
| ClusteringSquareGrid | ClusteringHexagonalGridFlat | ClusteringHexagonalGridPointy |
Aggregation is available through the Layer Properties Control and is stored to the project file.
Example
The recommended way to construct an aggregator is use TGIS_DynamicAggregatorFactory. It is also possible to directly assign an instance of a class that inherits from TGIS_AggregatorAbstract.
Please note that TGIS_LayerVector.DynamicAggregator owns an object, therefore the aggregator should not be freed directly.
Delphi
// attach aggregator layer.DynamicAggregator := TGIS_DynamicAggregatorFactory.CreateInstance( 'ClusteringHexagonalGridPointy', layer ) ; // detach aggregator layer.DynamicAggregator := nil ;
C++ Builder
// attach aggregator layer->DynamicAggregator = TGIS_DynamicAggregatorFactory::CreateInstance( "ClusteringHexagonalGridPointy", layer ) ; // deatch aggregator layer->DynamicAggregator = NULL ;
References
2026/06/12 22:26