How to plot stacked event duration (Gantt Charts) using Python Pandas?

Question

I have a Pandas DataFrame containing the date that a stream gage started measuring flow and the date that the station was decommissioned. I want to generate a plot showing

Answer 1

I think you are trying to create a gantt plot. This suggests using hlines:

from datetime import datetime
import pandas as pd
import matplotlib.pyplot as plt
import matplotlib.dates as dt

df = pd.read_csv('data.csv')
df.amin = pd.to_datetime(df.amin).astype(datetime)
df.amax = pd.to_datetime(df.amax).astype(datetime)

fig = plt.figure()
ax = fig.add_subplot(111)
ax = ax.xaxis_date()
ax = plt.hlines(df.index, dt.date2num(df.amin), dt.date2num(df.amax))