vander

vander(matrixData: any[] | Mat | Tensor, dim : number) : Mat

param matrixData - an Array, Mat or Tensor.

param dim - the dimension, which should be >= 0.

returns - Mat - a Vandermonde matrix

A Vandermonde matrix is defined by a set of scalars, which in this case, come from the matrix given as the first parameter, and you can limit it by dim.

An example to clarify is as follows:

$$\left[\begin{array}{ccccc}1& x_1& x_1^2& ...& x_1^{dim}\\ .& .& .& .& .\\ .& .& .& .& .\\ .& .& .& .& .\\ 1& x_n& x_n^2& ...& x_n^{dim}\end{array}\right]$$