def plot22(obs, sim, colname, energies=[[300, 1000], [1000, 2000]]):
"""Place 2*2 piecharts on a figure.
Parameters
----------
obs : `astropy.table.Table`
Observed events
sim : `astropy.table.Table`
Events simulated with MARX
energies : list
Two energy bands in eV defined as a list of lists.
Returns
-------
fig : `matplotlib.figure.Figure`
Figure with plot
"""
fig = plt.figure(figsize=(7, 7))
for i, data in enumerate([obs, sim]):
for j, en in enumerate(energies):
ax = fig.add_subplot(2, 2, i * 2 + j + 1, aspect="equal")
obssimlab = "Obs" if i == 0 else "MARX"
energylab = "{0} - {1} eV".format(en[0], en[1])
ax.set_title("{0}: {1}".format(obssimlab, energylab))
energy = colname_case(data, "energy")
plotpie(ax, data[(energy > en[0]) & (energy < en[1])], colname)
return fig
def plotpie(ax, data, col, colors=["r", "c", "m", "orange", "g"], **plotargs):
"""Bin up events data and display in pie chart"""
counts = np.bincount(colname_case(data, col))
labels = np.arange(len(counts))
ind = counts > 0
ax.pie(counts[ind], labels=labels[ind], colors=colors, autopct="%2i%%", **plotargs)