Examples for LLSSurvey (v1.0)



In [1]:

    
# imports
from xastropy.igm.abs_sys.lls_utils import LLSSurvey
import urllib2, urllib
import imp, json

xa_path = imp.find_module('xastropy')[1]

Instantiate

LLS Tree (JXP) -- Likely to Deprecate



In [2]:

    
lls_survey = LLSSurvey(flist='Lists/lls_metals.lst', tree=os.getenv('LLSTREE'))









    



WARNING: AstropyDeprecationWarning: Passing a frame as a positional argument is now deprecated, use the frame= keyword argument instead. [astropy.coordinates.sky_coordinate]
WARNING:astropy:AstropyDeprecationWarning: Passing a frame as a positional argument is now deprecated, use the frame= keyword argument instead.






    



Read 165 files from Lists/lls_metals.lst in the tree /u/xavier/LLS/

FITS and JSON files (HD-LLS, DR1)



In [3]:

    
# Grabs HD-LLS files from the website, as needed
hdlls = LLSSurvey.default_sample()



In [4]:

    
hdlls









    Out[4]:





[AbslineSurvey: nsys=157, type=LLS, ref=]

Simple Attributes



In [5]:

    
hdlls.nsys









    Out[5]:





157



In [6]:

    
hdlls.NHI[0:10]









    Out[6]:





array([ 19.65,  20.05,  17.55,  19.1 ,  20.  ,  19.1 ,  19.05,  19.05,
        19.25,  20.2 ])



In [7]:

    
hdlls.name[0:5]









    Out[7]:





array(['HD-LLS_J000345.00-232346.5_z2.187',
       'HD-LLS_J003454.80+163920.0_z3.754',
       'HD-LLS_J004049.50-402514.0_z2.816',
       'HD-LLS_J010355.30-300946.0_z2.908',
       'HD-LLS_J010516.80-184642.0_z2.927'], 
      dtype='|S33')



In [ ]: