Book Image

Python Data Analysis - Second Edition

By : Ivan Idris
Book Image

Python Data Analysis - Second Edition

By: Ivan Idris

Overview of this book

Data analysis techniques generate useful insights from small and large volumes of data. Python, with its strong set of libraries, has become a popular platform to conduct various data analysis and predictive modeling tasks. With this book, you will learn how to process and manipulate data with Python for complex analysis and modeling. We learn data manipulations such as aggregating, concatenating, appending, cleaning, and handling missing values, with NumPy and Pandas. The book covers how to store and retrieve data from various data sources such as SQL and NoSQL, CSV fies, and HDF5. We learn how to visualize data using visualization libraries, along with advanced topics such as signal processing, time series, textual data analysis, machine learning, and social media analysis. The book covers a plethora of Python modules, such as matplotlib, statsmodels, scikit-learn, and NLTK. It also covers using Python with external environments such as R, Fortran, C/C++, and Boost libraries.
Table of Contents (22 chapters)
Python Data Analysis - Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface
Key Concepts
Online Resources

Summary


In this chapter, we found out a heap about the NumPy basics--data types and arrays. Arrays have various properties that describe them. You learned that one of these properties is the data type, which, in NumPy, is represented by a full-fledged object.

NumPy arrays can be sliced and indexed in an effective way, compared to standard Python lists. NumPy arrays have the extra ability to work with multiple dimensions.

The shape of an array can be modified in multiple ways, such as stacking, resizing, reshaping, and splitting. A large number of convenience functions for shape manipulation were presented in this chapter.

Having picked up the fundamentals, it's time to proceed to data analysis with the commonly used functions in Chapter 4, Statistics and Linear Algebra. This includes the usage of staple statistical and numerical functions.

The reader is encouraged to read the books mentioned in the References section for exploring NumPy in further detail and depth.