sona11

sona11

Help Required - EDA Python Code Error

Hello there,

I’m working on an EDA project in Python, and I’d want to see the relationship between three numerical variables: “temperature,” “humidity,” and “pressure.” I intend to construct a heatmap for this purpose, similar to the one shown in this example. I used the following code:

import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt

# Loading the dataset
data = pd.read_csv('weather_data.csv')

# Extracting temperature, humidity, and pressure columns
temperature = data['temperature']
humidity = data['humidity']
pressure = data['pressure']

# Creating the correlation matrix
correlation_matrix = data.corr()

# Creating the heatmap
sns.heatmap(correlation_matrix, annot=True, cmap='coolwarm')
plt.title('Correlation Heatmap')
plt.show()

However, when I run the code, I get the following error:

ValueError: The truth value of a DataFrame is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

I’m not sure what caused this mistake or how to solve it. Could someone possibly help me understand the problem with my code and how to appropriately produce the correlation heatmap for the three variables?

Thank you for your assistance!

Most Liked

gulshan212

gulshan212

Well, there are some error in data.corr() function.
Here is the correct code:

import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt

# Loading the dataset
data = pd.read_csv('weather_data.csv')

# Extracting temperature, humidity, and pressure columns
temperature = data['temperature']
humidity = data['humidity']
pressure = data['pressure']

# Creating the correlation matrix
correlation_matrix = pd.DataFrame({'temperature': temperature, 'humidity': humidity, 'pressure': pressure}).corr()

# Creating the heatmap
sns.heatmap(correlation_matrix, annot=True, cmap='coolwarm')
plt.title('Correlation Heatmap')
plt.show()

Thanks

Where Next?

Popular General Dev topics Top

Devtalk
Hello Devtalk World! Please let us know a little about who you are and where you’re from :nerd_face:
New
Devtalk
Reading something? Working on something? Planning something? Changing jobs even!? If you’re up for sharing, please let us know what you’...
1052 21915 398
New
AstonJ
If you had the ear of a language creator, what would you say - what could they do to make a language that you would use? :upside_down_face:
New
New
mafinar
I always start with excitement and then get busy on 9/10th day. This year, like the year before this, and the year before that, I intend ...
New
finner
One of my 2021 resolutions is to read more tech books. As part of this effort I purchased two MEAPs (Manning Early Access Program) which...
New
OvermindDL1
What shell(s) do you use, why do you use them, and how do you have them configured? Note, this is about shell’s, not terminals, terminal...
New
AstonJ
Do we have any digital nomads here? Anyone fancy it? If so, which countries would you consider? I’ve been toying with the idea for a wh...
New
ivanhercaz
Hi! I usually keep changelogs for my projects because I think they are really useful, not only to track the changes and not to be lost b...
New
Margaret
Hello DevTalk Community! Once again, The Pragmatic Programmers are looking for developers who’d like to help shape the future of our boo...
New

Other popular topics Top

PragmaticBookshelf
Ruby, Io, Prolog, Scala, Erlang, Clojure, Haskell. With Seven Languages in Seven Weeks, by Bruce A. Tate, you’ll go beyond the syntax—and...
New
DevotionGeo
I know that -t flag is used along with -i flag for getting an interactive shell. But I cannot digest what the man page for docker run com...
New
AstonJ
You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
New
AstonJ
Just done a fresh install of macOS Big Sur and on installing Erlang I am getting: asdf install erlang 23.1.2 Configure failed. checking ...
New
AstonJ
I have seen the keycaps I want - they are due for a group-buy this week but won’t be delivered until October next year!!! :rofl: The Ser...
New
AstonJ
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
New
DevotionGeo
The V Programming Language Simple language for building maintainable programs V is already mentioned couple of times in the forum, but I...
New
PragmaticBookshelf
Rails 7 completely redefines what it means to produce fantastic user experiences and provides a way to achieve all the benefits of single...
New
AstonJ
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol: bre...
New
NewsBot
Node.js v22.14.0 has been released. Link: Release 2025-02-11, Version 22.14.0 'Jod' (LTS), @aduh95 · nodejs/node · GitHub
New