DK11 for ActiveX | TatukGIS_XDK11.TGIS_StatisticsPixel | Classes | Methods | Properties
Statistics class for raster layers.
// C# public class TGIS_StatisticsPixel : ITGIS_StatisticsPixel, ITGIS_StatisticsLayerEvents { }
' VisualBasic Public Class TGIS_StatisticsPixel Implements ITGIS_StatisticsPixel Implements ITGIS_StatisticsLayerEvents End Class
// Oxygene type TGIS_StatisticsPixel = public class end;
Name | Visibility | Description | |
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Add | public | Adds statistics result definition. (Inherited from ITGIS_StatisticsAbstract) |
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AddAll | public | Adds statistics result definitions for all available datasets. (Inherited from ITGIS_StatisticsAbstract) |
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AddAllBands | public | Adds statistics result definitions for all bands from pixel layer; | |
AddAllBands_2 | public | Adds statistics result definitions for all bands from pixel layer; | |
AddAll_2 | public | Adds statistics result definitions for all available datasets. (Inherited from ITGIS_StatisticsAbstract) |
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Add_2 | public | Adds statistics result definition. (Inherited from ITGIS_StatisticsAbstract) |
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Add_3 | public | Adds statistics result definition. (Inherited from ITGIS_StatisticsAbstract) |
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Add_4 | public | Adds statistics result definition. (Inherited from ITGIS_StatisticsAbstract) |
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AttachDelphiObj | public | Only for internal use of TatukGIS. (Inherited from ITBaseObject) |
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BusyEvent | public | (Inherited from ITGIS_StatisticsLayerEvents) |
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Calculate | public | Calculate requested statistics from the entire layer. (Inherited from ITGIS_StatisticsAbstract) |
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Calculate_2 | public | Calculate requested statistics from filtered elements of the layer. (Inherited from ITGIS_StatisticsAbstract) |
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Create_ | public | Create an object. (Inherited from ITGIS_StatisticsLayer) |
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DelphiObj | public | Only for internal use of TatukGIS. (Inherited from ITBaseObject) |
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Get | public | Get statistics result by name. (Inherited from ITGIS_StatisticsAbstract) |
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LoadFromFile | public | Parse statistics file and load all information into parent layer. (Inherited from ITGIS_StatisticsAbstract) |
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LoadFromFile_2 | public | Parse statistics file and load all information into parent layer. (Inherited from ITGIS_StatisticsAbstract) |
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Reset | public | Resets statistics object to initial state. (Inherited from ITGIS_StatisticsAbstract) |
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ResetModified | public | Undo changes in requested statistics definitions. (Inherited from ITGIS_StatisticsAbstract) |
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SaveToFile | public | Save layer statistics into auxiliary file. (Inherited from ITGIS_StatisticsAbstract) |
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SaveToFile_2 | public | Save layer statistics into auxiliary file. (Inherited from ITGIS_StatisticsAbstract) |
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Name | Visibility | Description | |
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Age | public | Age of the statistics. (Inherited from ITGIS_StatisticsAbstract) |
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AvailableResults | public | List of available results names; read-only. (Inherited from ITGIS_StatisticsAbstract) |
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DefinedResults | public | List of already defined results names; read-only. (Inherited from ITGIS_StatisticsAbstract) |
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FastStatistics | public | Determines the state if 'Fast Statistics' was computed; read-only. (Inherited from ITGIS_StatisticsAbstract) |
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Layer | public | Layer assigned to statistics; read-only. (Inherited from ITGIS_StatisticsLayer) |
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Modified | public | True if requested statistics have changed. (Inherited from ITGIS_StatisticsAbstract) |
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Obsolete | public | Check validity of statistics. (Inherited from ITGIS_StatisticsAbstract) |
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UseBesselCorrection | public | If True, statistics class will use Bessel's correction. (Inherited from ITGIS_StatisticsAbstract) |
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This class inherits from TGIS_StatisticsAbstract
and is specialised for pixel layers, e.g.:
AddAllBands
method,FastStatistics
property is set to True
by default. It means that the statistics engine uses resampling for pixel layers greater than 2048 x 2048 cells. In this case, results are approximate with high accuracy. Set False
to compute fully accurate statistics.See:
Pseudocode:
// layer.Statistics is an instance of TGIS_StatisticsAbstract so casting is needed stats = TGIS_StatisticsPixel(layer.Statistics); // add all bands from pixel layer stats.AddAllBands(TGIS_StatisticalFunctions.BasicStatistics); stats.Calculate; // demand a result stats_result = stats.Get(<valid_name>);
Valid names are 'A', 'R', 'G', 'B', 'H', 'S', 'L
' for images and 'Value
' for grid (listed in stats.AvailableResults
list).
Use later like in TGIS_Abstract example.