Posts by: Christian Pascual

Data Visualization in R with ggplot2: A Beginner Tutorial

A famous general is thought to have said, “A good sketch is better than a long speech.” That advice may have come from the battlefield, but it’s applicable in lots of other areas — including data science. “Sketching” out our data by visualizing it using ggplot2 in R is more impactful than simply describing the […]

Tutorial: Web Scraping in R with rvest

Learn how to do web scraping in R by using the rvest package to scrape data about the weather in this free R web scraping tutorial.

R API Tutorial: Getting Started with APIs in R

Learn how to access APIs using your R programming skills in this free tutorial covering how to get data from NASA’s free ISS API.

Python Dictionary Tutorial: Analyze Craft Beer with Dictionaries

Learn to use Python dictionaries to store, sort, and access data in this in-depth tutorial analyzing craft beer data to master dictionary techniques.

Tutorial: Understanding Regression Error Metrics in Python

Error metrics are short and useful summaries of the quality of our data. We dive into four common regression metrics and discuss their use cases.