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TGIS_LayerVector.MergeLayer(TGIS_LayerVector; TGIS_Extent; TGIS_ShapeType; String; TGIS_Shape; String; Boolean; Boolean) method

DK11 for Delphi | GisLayerVector.TGIS_LayerVector.MergeLayer | Overloads | Constructors | Fields | Methods | Properties | Events

Merges layer with an existing layer.

Available also on: .NET | Java | ActiveX | Python.


// Delphi
  procedure MergeLayer(
    const _layer : TGIS_LayerVector;
    const _extent : TGIS_Extent;
    const _type : TGIS_ShapeType;
    const _scope : String;
    const _shape : TGIS_Shape;
    const _de9im : String;
    const _truncated : Boolean;
    const _restrict : Boolean
  ); overload;
// C++ Builder
  void MergeLayer(
    TGIS_LayerVector* const _layer,
    TGIS_Extent* const _extent,
    TGIS_ShapeType* const _type,
    const UnicodeString _scope,
    TGIS_Shape* const _shape,
    const UnicodeString _de9im,
    const bool _truncated,
    const bool _restrict
  ) /* overload */;


Name Type Description
_layer TGIS_LayerVector layer to be imported
_extent TGIS_Extent starting extent of layer - can't be zero sized
_type TGIS_ShapeType shape type supported by a layer; if gistypeUnknown is used then import will try to recognize shape on its own;
_scope String SQL query for which shape will be imported
_shape TGIS_Shape if not nil, then only shapes matched _de9im matrix with _shape will be found
_de9im String DE-9IM matrix of comparison
_truncated Boolean if True, then all shapes will be truncated in _extent; if False, only the shape visible in _extent will be imported ;
_restrict Boolean if True, any field structure modification will raise error, otherwise allow to resize fields


Remember to assign 'path' property to layer you want to import from for proper import a new layer to file.
Use this method to merge layers. Before the merge SaveData will be fired.

2022/11/16 01:22

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