fd_new: Creating A Univariate Functional Data Object
In yixuan/fdaplus: Enhancement of the 'fda' package for functional data analysis

This function constructs an fd+ object that represents a set of univariate functional data.

1	fd_new(coefs, basis)

`coefs`	A matrix whose each row gives the coefficients of basis functions for each curve in this object. If `coefs` is a vector, it is treated as a matrix of one row.
`basis`	Basis of this functional data object. Should be of class `basis+` or one of its subclasses (`bspline+` and `fourier+`).