demean
Syntax
demean(X)
Arguments
X is a numeric scalar/vector/matrix/table.
Details
Center a dataset (zero-centering), and return an object of type DOUBLE with the same dimension as X. NULL values are ignored in the calculation.
If X is a vector, calculate X - avg(X);
If X is a matrix, perform calculations by columns;
If X is a table, perform calculations only for numeric columns.
Examples
$ x = 1 NULL 2 3
$ demean(x)
[-1,,0,1]
$ v = 1 0 1 1 8 2 -4 0
$ demean(v)
[-0.125,-1.125,-0.125,-0.125,6.875,0.875,-5.125,-1.125]