Demystifying Big Data: An Introduction to Some Useful Data Operation Tools

A sample image of computer code that works with data
A sample image of computer code that works with data. Photo credit: Markus Spiske.

“Big data” and “data science” are some of the buzzwords of our era, perhaps second only to “machine learning” or “artificial intelligence.” In our globalized, Internet-ized society of plentiful information galore, data has become perhaps the most important commodity of all. Across all kinds of academic disciplines, working with large amounts of data has become a necessity: universities and corporations advertise positions for “data scientists,” and media outlets warn ominously of the privacy risks associated with the rise of “big data.”

This isn’t an article that discusses the broader, societal implications of “big data,” although I highly encourage all readers to learn more about this important topic. Instead, I’m here purely to provide you some (hopefully) broadly applicable tips to working with large amounts of data in any academic context.

In my own field of climate science, data is paramount: researchers work with gigantic databases and arrays containing millions of elements (e.g., how different climate variables, such as temperature or precipitation, change over both space and time). But data, and opportunities for working with data, are present in every field, from operations research to history. Below is an overview of some existing data operation tools that can hopefully assist you on your budding data science career!

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Matplotlib: A Quick Intro to a Helpful Python Data Visualization Library

Graph of a heatmap with colors ranging from pale green to dark blue to indicate density of pedestrians.
Example heatmap of pedestrian traffic generated by the author to illustrate some of Matplotlib’s capabilities.

Data is everywhere. Whether it’s to track your music listening habits, analyze stock market trends, or understand scientific research, data is most valuable when it can be easily interpreted. This is where data visualization comes in: to transform raw data into clear, engaging visuals.

The Princeton University Library has a wealth of resources and research guides, including guides tailored specifically to data visualization in programming language R and statistical software Stata (often used in economics courses). However, not as many PUL research guides are currently available on data visualization in Python. If you haven’t heard of Python before, it’s a popular programming language that can tackle a versatile range of applications, including data analysis and artificial intelligence. While Stata and R are both excellent choices for statistical analysis and visualization, Python stands out for its flexibility, interactivity, and seamless integration with web development and machine learning applications.

In this article, I wanted to present a commonly-used Python library for data visualization: Matplotlib. By learning how to use Matplotlib, you’ll be able to take your data and turn it into visuals that communicate your findings effectively—a key skill whether you are analyzing survey results, studying statistics, or working on research projects!

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