Implement and use a faster method for computing the metallicity
Rename some simulations
Change label
Cleanups and fixes for the above
Support computing the fraction in a particular ion for DLAs
Implement loader for computing metal ions
Plot the metallicity from a single species (Si+ here)
instead of just from GFM_Metallicity, to get an idea of the bias
Deal with case where the metal species is already set
Implement storing the associated halo for every DLA
Close file fix
Implement plotting the impact parameter
Implement plotting breakdown of column density by halo mass
Little fix
Merge branch 'master' of github.com:sbird/DLA_script