TGIS_PixelFilterUniqueCount class

Unique value count filter for pixel layers - transforms the pixel value to the number of unique values within the block.

Available also on: .NET | Java | ActiveX.

Syntax

// Delphi
type
  TGIS_PixelFilterUniqueCount = class( TGIS_PixelFilterBlockStats )
  end;

// C++ Builder
class PASCALIMPLEMENTATION TGIS_PixelFilterUniqueCount : public TGIS_PixelFilterBlockStats
{
};

Inherited Overrides Protected

	Name	Visibility	Description
	Create	public

Inherited Protected

Name	Visibility	Description
aBlock	protected	Currently processed block. _{(Inherited from TGIS_PixelFilterAbstract)}
bCompound	protected	If True, then the filter is a compound filter. _{(Inherited from TGIS_PixelFilterAbstract)}
bPrepare	protected	If True, then the filter must be prepared before execution; False by default. _{(Inherited from TGIS_PixelFilterAbstract)}
bProcPixel	protected	If True, then the filter processes pixel-by-bixel instead of blocks; False by default. _{(Inherited from TGIS_PixelFilterAbstract)}
dstNoData	protected	NoData value of the destination layer. _{(Inherited from TGIS_PixelFilterAbstract)}
iBlockSize	protected	Size of the filter block (row/column length). _{(Inherited from TGIS_PixelFilterAbstract)}
iValueCnt	protected	Number of valid values in the current block. _{(Inherited from TGIS_PixelFilterAbstract)}
oBounds	protected	Bounds of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
srcLock	protected	Pixel lock of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
srcMaxVal	protected	Maximum value of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
srcMinVal	protected	Minimum value of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
srcNoData	protected	NoData value of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
srcValue	protected	Value (or lightness) of the current pixel of the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}

Inherited Overrides Protected

Name	Visibility	Description
Execute	public	Applies the filter on the source layer. _{(Inherited from TGIS_PixelFilterAbstract)}
getValue	protected	Gets the pixel value for a given position within the pixel lock bands. _{(Inherited from TGIS_PixelFilterAbstract)}
maskToString	protected	Prepares a string representation of a mask array. _{(Inherited from TGIS_PixelFilterAbstract)}
prepareMask	protected	Prepares mask array from a string representation(comma-separated integers). _{(Inherited from TGIS_PixelFilterAbstract)}
prepFilter	protected	Prepares the filter if necessary (if bPrepare=True). _{(Inherited from TGIS_PixelFilterBlockStats)}
procBlock	protected	Processes current block (if bSkipBlock=False). _{(Overrides TGIS_PixelFilterAbstract.procBlock)}
procCompound	protected	Processes image using other filters. _{(Inherited from TGIS_PixelFilterBlockStats)}
procPixel	protected	Processes current pixel (if bSkipBlock=True). _{(Inherited from TGIS_PixelFilterBlockStats)}
raiseBusyEvent	protected	Prepares and raises the BusyEvent. _{(Inherited from TGIS_PixelFilterAbstract)}

Inherited Protected

Name	Visibility	Description
Band	public	Defines the band to be processed; if set to zero then all bands will be processed; default is 1. _{(Inherited from TGIS_PixelFilterAbstract)}
BlockSize	public	Size of the moving block (number of columns/rows); default is 3 (for a 3x3 block). _{(Inherited from TGIS_PixelFilterBlockStats)}
ColorSpace	public	Defines the color space in which the image will be processed; default is HSL. _{(Inherited from TGIS_PixelFilterAbstract)}
DestinationLayer	public	Destination layer, pixel (image or grid); if nil then the source layer will be altered. _{(Inherited from TGIS_PixelFilterAbstract)}
SourceLayer	public	Source layer, pixel (image or grid). _{(Inherited from TGIS_PixelFilterAbstract)}