TGIS_ContourGenerator class

Implementation of the contour (isohypse) generation algorithm for grid/DEM layers.

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

Syntax

// Delphi
type
  TGIS_ContourGenerator = class( TGIS_BaseObjectDisposable )
  end;

// C++ Builder
class PASCALIMPLEMENTATION TGIS_ContourGenerator : public TGIS_BaseObjectDisposable
{
};

Inherited Overrides Protected

	Name	Visibility	Description
	Create	public	Creates an instance.

Inherited Overrides Protected

Name	Visibility	Description
CalculateInterval(TGIS_LayerPixel)	public	Calculates ContourInterval for default 20 levels and sets ContourBase to the lowest value of the source layer.
CalculateInterval(TGIS_LayerPixel; Integer)	public	Calculates ContourInterval for the given number of levels and sets ContourBase to the lowest value of the source layer.
Generate(TGIS_LayerPixel; TGIS_LayerVector; String)	public	Creates vector contours from a raster grid layer.
Generate(TGIS_LayerPixel; TGIS_LayerVector; String; String)	public	Creates vector contours from a raster grid layer.

Inherited Protected

Name	Visibility	Description
ContourBase	public	The "base" relative to which contour intervals are applied.
ContourInterval	public	The elevation interval between generated contours.
CustomNoData	public	If True the NoDataValue will be used as nodata value; default is False
FixedLevelCount	public	The number of elements in FixedLevels property.
FixedLevels	public	The list of fixed levels at which contours should be generated.
MinSize	public	Minimum dimension in meters for generated features; Minimum length for polylines, minimum area for polygons.
Mode	public	Type of contour generator output; default is Polylines.
NoDataValue	public	The value to use as a NoData value.
Smoothen	public	If True then the generated contours will be smoothened.
SmoothFactor	public	Smooth factor.

Inherited Protected

	Name	Visibility	Description
	BusyEvent	published