COSINES Function

COSINES Function

Standard Library basis function that can be used by the SVDFIT function.

Usage

result = COSINES(x, m)

Input Parameters

x—A vector of data values with n elements.

m—The number of terms in the basis function.

Returned Value

result—An n-by-m array, such that:

result(i, j) = COS(j * x(i))

Keywords

None.

Discussion

COSINES consists simply of the following two lines:

FUNCTION COSINES, x, m

RETURN, COS(x # FINDGEN(m))