Make a histogram for a pandas dataframe where the columns are the individual bins

Question

I have a dataframe that looks like the following:

Blue	Green	Red
1.0	27.0	30.0
24.0	3.0	22.0
3.0	3.0	2.0
5.0	0.0	5.0
2.0	5.0	6.0
10.0	20.0	7.0

I want to make a histogram with each of the column names in as the bins on the x-axis, and the summed values of the numbers as the bar heights. How can I do this, as most of the visualization library examples I've seen have not used the columns themselves as the bins. Any visualization library is fine.

Answer 1

Based on your description, I think you need a generic bar chart which can be created like this

import matplotlib.pyplot as plt
import pandas as pd

# Example dataframe
df = pd.DataFrame({'Blue': [1, 2, 3], 'Green': [2, 3, 4], 'Red': [3, 4, 5]})

# Calculate the sum of each column
column_sums = df.sum()

# Plot the bar chart
column_sums.plot(kind='bar', color=['blue', 'green', 'red'])
plt.show()