The method MeanCenterNumCellRows transforms the rows 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 rows are returned in the parameter Means. Rows which contain nominal or ordinal values are left unchanged. The length of the Means array is automatically adjusted to the number of rows of the matrix.
