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11.4.18. astroML.datasets.fetch_LIGO_bigdog

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

Loader for LIGO bigdog event

Parameters :

data_home : optional, default=None

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

download_if_missing : optional, 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.

Returns :

data : record array

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

Examples

>>> 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]