scopesim.effects.spectral_trace_list_utils

Utility classes and functions for SpectralTraceList.

This module contains

• the definition of the SpectralTrace class. The visible effect should always be a SpectralTraceList, even if that contains only one SpectralTrace.

• the definition of the XiLamImage class

• utility functions for use with spectral traces

Functions

fill_zeros(x)	Fill in zeros in a sequence with the previous non-zero number.
fit2matrix(fit)	Return coefficients from a polynomial fit as a matrix.
get_affine_parameters(coords)	Return rotation and shear for each MTC point along a SpectralTrace.
make_image_interpolations(hdulist, **kwargs)	Create 2D interpolation functions for images.
rolling_median(x, n)	Calculate the rolling median of a sequence for +/- n entries.
xilam2xy_fit(layout, params)	Determine polynomial fits of FPA position.
xy2xilam_fit(layout, params)	Determine polynomial fits of wavelength/slit position.

Classes

SpectralTrace(trace_tbl[, cmds])	Definition of one spectral trace.
Transform2D(matrix[, pretransform_x, ...])	2-dimensional polynomial transform.
XiLamImage(fov, dlam_per_pix)	Class to compute a rectified 2D spectrum.