pca_solve

pydl.pydlspec2d.spec1d.pca_solve(newflux, newivar, maxiter=0, niter=10, nkeep=3, nreturn=None, verbose=False)[source]

Replacement for idlspec2d pca_solve.pro.

Parameters:

newflux : array-like

The input spectral flux, assumed to have a common wavelength and redshift system.

newivar : array-like

The inverse variance of the spectral flux.

maxiter : int, optional

Stop PCA+reject iterations after this number.

niter : int, optional

Stop PCA iterations after this number.

nkeep : int, optional

Number of PCA components to keep.

nreturn : int, optional

Number of PCA components to return, usually the same as nkeep.

verbose : bool, optional

If True, print extra information.
Returns:

dict

The PCA solution.