11.4.18. astroML.datasets.fetch_LIGO_bigdog

astroML.datasets.fetch_LIGO_bigdog(data_home=None, download_if_missing=True)[source]

Loader for LIGO bigdog event

data_homeoptional, default=None

Specify another download and cache folder for the datasets. By default all astroML data is stored in ‘~/astroML_data’.

download_if_missingoptional, default=True

If False, raise a IOError if the data is not locally available instead of trying to download the data from the source site.

datarecord array

The data is 10 seconds of measurements from three sites, along with the time of each measurement.


>>> from astroML.datasets import fetch_LIGO_bigdog
>>> data = fetch_LIGO_bigdog()  
>>> print(data.dtype.names)  
('t', 'Hanford', 'Livingston', 'Virgo')
>>> print(data['t'][:3])  
[  0.00000000e+00   6.10400000e-05   1.22070000e-04]
>>> print(data['Hanford'][:3])  
[  1.26329846e-17   1.26846778e-17   1.19187381e-17]