Convert the format of the delta file

input : deltas repository containing one file per plate output: deltas fits file readable by lya_auto_correlation subtract(optional): substract the mean of the deltas and correct the factor due to the substraction of the continuum (eq 6 and 7, Bautista (2017))

command: convert_deltas.py -d deltas -o delta.fits --substract

Computation of the Lya auto correlation function

command : lya_auto_correlation -f delta.fits -o xiA.data

Plot

py/plot_cf.py -d xiA.data