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:

$$\begin{bmatrix} 1 & x_1 & x_1^2 & ... & x_1^{dim} \\ . & . & . & . & . \\ . & . & . & . & .\\ . & . & . & . & .\\ 1 & x_n & x_n^2 & ... & x_n^{dim} \end{bmatrix}$$