In [1]:

    

import sncosmo


    

In [2]:

    

data  = sncosmo.load_example_data()


    

In [3]:

    

data


    

    
Out[3]:




time
band
flux
fluxerr
zp
zpsys
55070.0
sdssg
0.36351153597
0.672843847541
25.0
ab
55072.0512821
sdssr
-0.200801295864
0.672843847541
25.0
ab
55074.1025641
sdssi
0.307494232981
0.672843847541
25.0
ab
55076.1538462
sdssz
1.08776103656
0.672843847541
25.0
ab
55078.2051282
sdssg
-0.43667895645
0.672843847541
25.0
ab
55080.2564103
sdssr
1.09780966779
0.672843847541
25.0
ab
55082.3076923
sdssi
3.7562685627
0.672843847541
25.0
ab
55084.3589744
sdssz
5.34858894966
0.672843847541
25.0
ab
55086.4102564
sdssg
2.82614187269
0.672843847541
25.0
ab
55088.4615385
sdssr
7.56547045054
0.672843847541
25.0
ab
55090.5128205
sdssi
7.43316961013
0.672843847541
25.0
ab
...
...
...
...
...
...
55129.4871795
sdssr
2.6597485586
0.672843847541
25.0
ab
55131.5384615
sdssi
3.99520404021
0.672843847541
25.0
ab
55133.5897436
sdssz
5.73989458094
0.672843847541
25.0
ab
55135.6410256
sdssg
0.330702283107
0.672843847541
25.0
ab
55137.6923077
sdssr
0.565286726579
0.672843847541
25.0
ab
55139.7435897
sdssi
3.04318346795
0.672843847541
25.0
ab
55141.7948718
sdssz
5.62692686384
0.672843847541
25.0
ab
55143.8461538
sdssg
-0.722654789013
0.672843847541
25.0
ab
55145.8974359
sdssr
1.12091764262
0.672843847541
25.0
ab
55147.9487179
sdssi
2.1246695264
0.672843847541
25.0
ab
55150.0
sdssz
5.3482175645
0.672843847541
25.0
ab

In [7]:

    

sncosmo.write_lc(data, fname='lc.salt', format='salt') #works


    

In [8]:

    

sncosmo.write_lc(data, fname='lc.json', format='json') #works


    

In [9]:

    

sncosmo.write_lc(data, fname='lc.fits', format='snana', pedantic=False)


    

In [5]:

    

help(sncosmo.write_lc)


    

    




Help on function write_lc in module sncosmo.io:

write_lc(data, fname, format='ascii', **kwargs)
    Write light curve data.
    
    Parameters
    ----------
    data : `~astropy.table.Table`
        Light curve data.
    fname : str
        Filename.
    format : {'ascii', 'salt2', 'snana', 'json'}, optional
        Format of file. Default is 'ascii'. 'salt2' is the new format available
        in snfit version >= 2.3.0.
    delim : str, optional
        **[ascii only]** Character used to separate entries on a line.
        Default is ' '.
    metachar : str, optional
        **[ascii only]** Metadata designator. Default is '@'.
    raw : bool, optional
        **[salt2, snana]** By default, the SALT2 and SNANA writers rename
        some metadata keys and column names in order to comply with what
        snfit and SNANA expect. Set to True to override this.
        Default is False.
    pedantic : bool, optional
        **[salt2, snana]** If True, check that output column names and header
        keys comply with expected formatting, and raise a ValueError if not.
        It is probably a good idea to set to False when raw is True.
        Default is True.

In [ ]: