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Mastering pandas

You're reading from   Mastering pandas A complete guide to pandas, from installation to advanced data analysis techniques

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Product type Paperback
Published in Oct 2019
Publisher
ISBN-13 9781789343236
Length 674 pages
Edition 2nd Edition
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Author (1):
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Ashish Kumar Ashish Kumar
Author Profile Icon Ashish Kumar
Ashish Kumar
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Overview of Data Analysis and pandas
2. Introduction to pandas and Data Analysis FREE CHAPTER 3. Installation of pandas and Supporting Software 4. Section 2: Data Structures and I/O in pandas
5. Using NumPy and Data Structures with pandas 6. I/Os of Different Data Formats with pandas 7. Section 3: Mastering Different Data Operations in pandas
8. Indexing and Selecting in pandas 9. Grouping, Merging, and Reshaping Data in pandas 10. Special Data Operations in pandas 11. Time Series and Plotting Using Matplotlib 12. Section 4: Going a Step Beyond with pandas
13. Making Powerful Reports In Jupyter Using pandas 14. A Tour of Statistics with pandas and NumPy 15. A Brief Tour of Bayesian Statistics and Maximum Likelihood Estimates 16. Data Case Studies Using pandas 17. The pandas Library Architecture 18. pandas Compared with Other Tools 19. A Brief Tour of Machine Learning 20. Other Books You May Enjoy

Binning values

The pandas cut() function bins values in a 1-dimensional array. Consider the following 1-dimensional array with 10 values. Let's group it into three bins:

bin_data = np.array([1, 5, 2, 12, 3, 25, 9, 10, 11, 4])
pd.cut(bin_data, bins = 3)

The following is the output:

pandas cut function with three bins

Each of the 10 elements is mapped to one of the three bins. The cut function maps the items to a bin and provides information about each bin. Instead of specifying the number of bins, the boundaries of the bins could also be provided in a sequence:

pd.cut(bin_data, bins = [0.5, 7, 10, 20, 30])

The following is the output:

pandas cut function with bin values

The intervals for binning can be directly defined using the pandas interval_range function. Consider the following example, demonstrating the creation of a pandas IntervalIndex object:

interval = pd.interval_range...
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