func_fit¶

pydl.pydlutils.trace.func_fit(x, y, ncoeff, invvar=None, function_name='legendre', ia=None, inputans=None, inputfunc=None)[source]¶

Fit x, y positions to a functional form.

Parameters:

xarray-like: X values (independent variable).
yarray-like: Y values (dependent variable).
ncoeffint: Number of coefficients to fit.
invvararray-like, optional: Weight values; inverse variance.
function_namestr, optional: Function name, default ‘legendre’.
iaarray-like, optional: An array of bool of length ncoeff specifying free (True) and fixed (False) parameters.
inputansarray-like, optional: An array of values of length ncoeff specifying the values of the fixed parameters.
inputfuncarray-like, optional: Multiply the function fit by these values.

Returns:

Raises: