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MeanCenterNumCellColumns


Unit:SDL_datatable
Class:TDataTable
Declaration:procedure MeanCenterNumCellColumns (Means: TVector);

The method MeanCenterNumCellColumns transforms the columns of the numeric cells (cells which are neither marked as csNAN, nor as csUndefined) of the data table in a way that each row of the matrix has thereafter a zero mean. The original means of all columns are returned in the parameter Means. Columns which contain nominal or ordinal values are left unchanged. MeanCenterNumCellColumns triggers the OnChange event.

Please note that size of the vector parameter Means has to be equal to NrOfColumns. Means may be set to NIL, if these results are not needed.



Last Update: 2012-Oct-20