Primitive Routines
ew_extract, w, t, f, ew
extract equivalent widths ew(t) from 2d spectrum f(w,t)
eqw_calc, w, f, ew
compute equivalent widths from normalized spectra
* fft_filter, original, t, g_cen, g_sig, filtered
smooth a function with a gaussian filter
gauss_filter, n, t, g_cen, g_sig, freqs, filter
compute a gaussian filter for applying to a FFT
lp_moment, v, p, v_rest, mom
calulate moments of a line profile
dft_period, t,f,frq,dft,clean_mode
compute periodogram dft(frq) from a light curve f(t). Use CLEAN if clean_mode
= 1.
prbola, xv, yv, a, as, t, ts, is, fit
fit a parabola fit(xv) to an arbitrary function yv(xv)
sinefit, x, a, f
evaluates a sine function on a given x-array