Using the new pandas release (0.14.0 or later) the below code will work. To create the two axis I have manually created two matplotlib axes objects (ax and ax2) which will serve for both bar plots. When plotting a Dataframe you can choose the axes object using ax=…. Also in order to prevent the two … Read more
Actually I think this problem is best solved by adjusting figsize and width; here is my output with figsize=(2,7) and width=0.3: By the way, this type of thing becomes a lot simpler if you use pandas wrappers (i’ve also imported seaborn, not necessary for the solution, but makes the plot a lot prettier and more … Read more
I think need melt if want use barplot: data = df.melt(‘date’, var_name=”a”, value_name=”b”) print (data) date a b 0 2017-09-05 A 25 1 2017-09-06 A 261 2 2017-09-07 A 188 3 2017-09-08 A 200 4 2017-09-09 A 292 5 2017-09-05 B 261 6 2017-09-06 B 1519 7 2017-09-07 B 1545 8 2017-09-08 B 2110 9 … Read more
Tested in python 3.11, pandas 1.5.1, matplotlib 3.6.2 Sample Data and Imports import pandas as pd import matplotlib.pyplot as plt import numpy as np np.random.seed(2022) # creates a consistent sample y = np.random.rand(10,4) y[:,0]= np.arange(10) df = pd.DataFrame(y, columns=[“X”, “A”, “B”, “C”]) X A B C 0 0.0 0.499058 0.113384 0.049974 1 1.0 0.486988 0.897657 … Read more
import matplotlib.pyplot as plt from matplotlib.dates import date2num import datetime x = [ datetime.datetime(2011, 1, 4, 0, 0), datetime.datetime(2011, 1, 5, 0, 0), datetime.datetime(2011, 1, 6, 0, 0) ] x = date2num(x) y = [4, 9, 2] z = [1, 2, 3] k = [11, 12, 13] ax = plt.subplot(111) ax.bar(x-0.2, y, width=0.2, color=”b”, align=’center’) … Read more
The seaborn.catplot organizing function returns a FacetGrid, which gives you access to the fig, the ax, and its patches. If you add the labels when nothing else has been plotted you know which bar-patches came from which variables. From @LordZsolt’s answer I picked up the order argument to catplot: I like making that explicit because … Read more
Pandas will show grouped bars by columns. Entries in each row but different columns will constitute a group in the resulting plot. Hence you need to “reshape” your dataframe to have the “group” as columns. In this case you can pivot like df.pivot(“column”, “group”, “val”) producing group g1 g2 column c1 10 8 c2 12 … Read more