Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

Post History

71%
+3 −0
Q&A How to add vertical lines for visual separation in pandas plot

MWE import pandas as pd import numpy as np import matplotlib.pyplot as plt df = pd.DataFrame(np.random.rand(9, 4), columns=['a', 'b', 'c', 'd']) df.plot.bar() plt.show() Question Ho...

2 answers  ·  posted 1y ago by mcp‭  ·  last activity 1y ago by samcarter‭

#4: Nominated for promotion by user avatar Alexei‭ · 2022-07-24T10:47:30Z (over 1 year ago)
#3: Post edited by user avatar mcp‭ · 2022-07-21T18:51:30Z (over 1 year ago)
Remove support tag now in right tab (Q&A)
#2: Post edited by user avatar mcp‭ · 2022-07-21T17:45:55Z (over 1 year ago)
Add python tag
#1: Initial revision by user avatar mcp‭ · 2022-07-21T17:45:33Z (over 1 year ago)
How to add vertical lines for visual separation in pandas plot
# MWE
```py
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt


df = pd.DataFrame(np.random.rand(9, 4), columns=['a', 'b', 'c', 'd'])
df.plot.bar()
plt.show()
```

![Busy Bar Graph](https://software.codidact.com/uploads/ULaNwNrkXuSqPYiKGbEjrzGa)

# Question
How do I add separating vertical lines between groups? Say these are
groups of three:  
`(0, 1, 2), LINE, (3, 4, 5), LINE, (6, 7, 8)`

# Notes
This really helps for recognizing patterns and tracking trends in a
busy, but useful graph.