pandas profiling with code examples

Pandas is a powerful python library for data manipulation, analysis, and visualization. However, when analyzing large datasets, understanding the data can be overwhelming. Pandas profiling library comes to the rescue as it generates an interactive report with descriptive statistics and visualizations for a complete understanding of the data.

In this article, we will discuss all about pandas profiling, its features, and how to use it with code examples.

What is pandas profiling?

Pandas profiling is an open-source python library that generates an interactive report with descriptive statistics, visualizations, and insights about a dataset. It is an easy-to-use tool that automates the descriptive analysis of the data. The report generated includes detailed information about each column such as type, count, unique values, mean, standard deviation, and many more.

Pandas profiling is built on top of pandas, matplotlib, and seaborn libraries, making it easy to integrate with pandas and jupyter notebooks.

Features of pandas profiling

Pandas profiling has various features that make it an indispensable tool for data analysis. Some of the key features are:

1. Descriptive statistics

Pandas profiling generates a brief description of each column in the dataset. It gives you an overall view of the data without requiring any manual calculations. The report includes details about the total number of records, number of missing values, unique values, frequency of values, minimum, maximum value, and statistical information like mean, standard deviation, and quartiles.

2. Distribution plots

Pandas profiling generates several plots based on the data distribution of each column. The report includes histograms, KDE plots, and box plots for a good visualization of the data distribution. These plots help in exploring the data and uncovering patterns, outliers, and trends.

3. Correlation analysis

Pandas profiling provides insights into the relationship between the variables in the dataset. The report includes a correlation matrix for the numerical columns, scatter matrix for multiple comparisons, and heatmap for a better visualization of correlation. These tools help in identifying and analyzing the correlation between variables.

4. Missing values analysis

Pandas profiling provides insights into the missing values in the dataset. The report includes a summary table of the columns with missing values, the total number of missing values, percentage of missing values, and a bar chart to visualize the missing values in each column.

5. Data quality analysis

Pandas profiling checks the quality of the data and provides insights into the data structure. The report includes details of the data type, sample, and category for each column. This helps in evaluating the quality of the data and identifying issues with the data structure.

How to use pandas profiling?

Pandas profiling is easy to use and can be integrated with jupyter notebooks or python scripts. The following steps outline how to use pandas profiling:

1. Install pandas profiling library

To use pandas profiling, you first need to install the library. You can install it via pip using the following code:

!pip install pandas-profiling[notebook]

2. Import pandas and pandas profiling libraries

After installation, you need to import pandas and pandas profiling libraries. You can do this using the following code:

import pandas as pd
from pandas_profiling import ProfileReport

3. Load dataset

After importing the libraries, you need to load the dataset you want to analyze. You can load the dataset using pandas as shown below:

df = pd.read_csv('dataset.csv')

4. Create a profile report

Now, you need to create a profile report for the dataset. You can do this using the following code:

profile = ProfileReport(df, title='Pandas Profiling Report', html={'style':{'full_width':True}})

The ProfileReport() function takes the dataframe as the input and creates a report with the title "Pandas Profiling Report". The "html" parameter specifies the style of the report.

5. Generate report

Finally, you can generate the report using the following code:

profile.to_notebook_iframe()

This code generates an HTML report that can be displayed in a Jupyter notebook or web browser.

Example

Let us consider a dataset "iris.csv" containing data on the iris flower species. To generate a pandas profiling report for this dataset, perform the following steps:

1. Install pandas profiling library

We will install the pandas profiling library via pip in the terminal or command prompt:

!pip install pandas-profiling[notebook]

2. Import pandas and pandas profiling libraries

We will then import pandas and pandas profiling libraries:

import pandas as pd
from pandas_profiling import ProfileReport

3. Load dataset

We will now load our dataset "iris.csv" using pandas:

df = pd.read_csv('iris.csv')

4. Create a profile report

We will then create a profile report for our dataframe:

profile = ProfileReport(df, title='Pandas Profiling Report', html={'style':{'full_width':True}})

5. Generate report

Finally, we will generate the report by running the following code:

profile.to_notebook_iframe()

This will generate the pandas profiling report.

Conclusion

Pandas profiling is a powerful library that generates an interactive report with descriptive statistics, visualizations, and insights about a dataset. It makes data analysis simple and easy to understand even for beginners. With just a few lines of code, you can create a comprehensive report of your dataset. As you work with large datasets, pandas profiling will be a handy tool to help you understand and analyze the data.

let me elaborate on some of the topics in more detail.

Descriptive statistics

Descriptive statistics is a branch of statistics that deals with summarizing and describing the data. Pandas profiling provides various descriptive statistics like count, mean, standard deviation, minimum, maximum value, and quartiles for each variable in the dataset. With pandas profiling, you can easily identify skewed distribution, outliers, and missing values.

Distribution plots

Distribution plots are a great way to visualize the data distribution of each column. Pandas profiling provides multiple distribution plots like histograms, KDE plots, and box plots. Histograms show the frequency of each value in a column, while KDE plots provide a smooth estimate of the data distribution. Box plots help in identifying outliers in the data and highlighting the skewness of the distribution.

Correlation analysis

Correlation analysis is a statistical method that helps to understand the relationship between variables. Pandas profiling provides several tools for correlation analysis like a correlation matrix, scatter matrix, and a heatmap. A correlation matrix shows the correlation between numerical variables in the dataset. A scatter matrix is used to compare multiple variables in the dataset. Heatmap plots the correlation matrix with a color code for better visualization.

Missing values analysis

Missing values in the dataset can cause problems in modeling. Pandas profiling provides insights into the number of missing values in each column in the dataset. It also provides visual tools like a bar chart that gives a quick overview of the extent of missing values in each column. By identifying missing values using pandas profiling, you can impute them with appropriate values or drop them before modeling.

Data quality analysis

Data quality analysis helps in understanding the structure and format of the data. In pandas profiling, data quality analysis includes checking the data type of each variable, the number of unique values, and categories in categorical variables. It helps in identifying issues with the data structure, missing categories in categorical variables, and invalid data types.

Conclusion

Pandas profiling helps in automating the descriptive analysis of large datasets, making it easy to understand and analyze the data. It reduces the time and effort required for descriptive data analysis, allowing analysts to focus more on modeling and drawing insights. With its powerful features like descriptive statistics, distribution plots, correlation analysis, missing values analysis, and data quality analysis, pandas profiling is a must-have tool for any data analyst or data scientist.

Popular questions

  1. What is pandas profiling, and what are its key features?
  • Pandas profiling is a python library that generates an interactive report with visualizations and descriptive statistics for a dataset. It provides various tools for descriptive analysis, like distribution plots, correlation analysis, missing values analysis, and data quality analysis, making data analysis simpler and more effective.
  1. How do you generate a pandas profiling report for a dataset?
  • To generate a pandas profiling report, you need to install the pandas profiling library, import pandas and pandas profiling libraries, load the dataset, create a profile report for the loaded dataset, and generate the report. The report is generated as an HTML file, which can be displayed in a jupyter notebook or web browser.
  1. What type of information is included in the pandas profiling report?
  • The pandas profiling report includes detailed information about each column in the dataset. It provides a brief description, data type, count, missing values, unique values, frequencies, and statistical information like mean, standard deviation, and quartiles. It also includes various visualizations like distribution plots, correlation matrix, scatter matrix, and review of missing data.
  1. What is the significance of pandas profiling in data analysis?
  • Pandas profiling helps in generating quick insights into the dataset, providing a comprehensive understanding of the underlying data structure and structure. It also helps in identifying patterns, trends, outliers, data quality issues, and missing values, which helps in effective data pre-processing and modeling. Pandas profiling is a powerful library that increases productivity and efficiency in data analysis.
  1. What are some use cases of pandas profiling?
  • Pandas profiling can be used in various fields like finance, healthcare, marketing, social sciences, and many more. It can be helpful in analyzing large datasets and identifying trends, patterns, and outliers. It is also useful for data preprocessing, identifying missing values, and checking data quality. Pandas profiling can be used in exploratory data analysis, benchmarking, and model selection for better insights and performance.

Tag

"ProfilingPlus"

As a seasoned software engineer, I bring over 7 years of experience in designing, developing, and supporting Payment Technology, Enterprise Cloud applications, and Web technologies. My versatile skill set allows me to adapt quickly to new technologies and environments, ensuring that I meet client requirements with efficiency and precision. I am passionate about leveraging technology to create a positive impact on the world around us. I believe in exploring and implementing innovative solutions that can enhance user experiences and simplify complex systems. In my previous roles, I have gained expertise in various areas of software development, including application design, coding, testing, and deployment. I am skilled in various programming languages such as Java, Python, and JavaScript and have experience working with various databases such as MySQL, MongoDB, and Oracle.
Posts created 3251

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Posts

Begin typing your search term above and press enter to search. Press ESC to cancel.

Back To Top