2. Plotting an EventTable in a histogram¶
I would like to study the distribution of the GW events detected to date.
First, we can download the 'GWTC-1-confident' catalogue using
EventTable.fetch_open_data():
from gwpy.table import EventTable
events = EventTable.fetch_open_data(
"GWTC-1-confident",
columns=("mass_1_source", "mass_2_source"),
)
events.add_column(
events["mass_1_source"] + events["mass_2_source"],
name="mtotal"
)
and can generate a new Plot using the
hist() method:
plot = events.hist('mtotal', bins=10, range=(0, 100), histtype='stepfilled')
ax = plot.gca()
ax.set_xlabel(r"Total mass [M$_{\odot}$]")
ax.set_ylabel("Number of events")
ax.set_title("GWTC-1-confident")
plot.show()
(png)
