Latest content & updates

A panoramic view of my recent projects and updates

Scatterplot grid of penguins. Rows show species: Adelie (red), Chinstrap (green), Gentoo (blue). Columns show islands: Biscoe, Dream, Torgersen. X-axis is flipper length in millimeters, y-axis is body mass in grams. Each dot is one penguin. Y-axis scales differ by row.

Ragged facets in ggplot2 with {ggragged}
Visualization

Faceted plots in ggplot2 are powerful but sometimes too rigid. In this blog post, we’ll use the palmerpenguins dataset to explore how the {ggragged} package makes it easy to…

Dr. Joscelin Rocha-Hidalgo
Sep 29, 2025

Five examples of figures for a corralation table. In the top left, we see a heat map overlaid with a dendrogram. The heat map employs shades of red to indicate varying degrees of positive correlation among several variables, with lighter shades indicating stronger relationships. The dendrogram, a tree-like diagram, depicts the clustering of variables based on the strength of their correlations. The top right quadrant features scatter plots matrix (sometimes called a pairs plot) for various variable combinations. Each scatter plot shows the relationship between two different variables, with a Pearson correlation coefficient displayed prominently. Additionally, histograms along the diagonal show the distribution of each individual variable.The bottom left image presents a circular layout where variables are arranged around a circle, with curved lines connecting them. The thickness and color of the lines indicate the strength and nature of the correlation (positive or negative), and alongside each line, the corresponding correlation coefficient is displayed. The center image features a somple heat map . The heat map employs shades of red to indicate the varying degrees of positive correlation and purple shades for negative correlations. The more solid the color is, the closer to one or negative one. Finally, the bottom right section contains a classic correlation matrix, with squares colored on a gradient from blue (negative correlation) to red (positive correlation). A scale on the right side indicates the range of correlation values, and the matrix is symmetrical about the diagonal, which is left blank, emphasizing the redundancy of mirroring values.

Visualizing Correlations Using the corrplot package
Tables
Correlation
Markdown
Visualization

Creating various types of correlation tables to explore relationships between variables is a crucial part of data analysis. In this blog post, we’ll use the palmerpenguins…

Dr. Joscelin Rocha-Hidalgo
Mar 22, 2024

Five examples of figures for a corralation table. In the top left, we see a heat map overlaid with a dendrogram. The heat map employs shades of red to indicate varying degrees of positive correlation among several variables, with lighter shades indicating stronger relationships. The dendrogram, a tree-like diagram, depicts the clustering of variables based on the strength of their correlations. The top right quadrant features scatter plots matrix (sometimes called a pairs plot) for various variable combinations. Each scatter plot shows the relationship between two different variables, with a Pearson correlation coefficient displayed prominently. Additionally, histograms along the diagonal show the distribution of each individual variable.The bottom left image presents a circular layout where variables are arranged around a circle, with curved lines connecting them. The thickness and color of the lines indicate the strength and nature of the correlation (positive or negative), and alongside each line, the corresponding correlation coefficient is displayed. The center image features a somple heat map . The heat map employs shades of red to indicate the varying degrees of positive correlation and purple shades for negative correlations. The more solid the color is, the closer to one or negative one. Finally, the bottom right section contains a classic correlation matrix, with squares colored on a gradient from blue (negative correlation) to red (positive correlation). A scale on the right side indicates the range of correlation values, and the matrix is symmetrical about the diagonal, which is left blank, emphasizing the redundancy of mirroring values.

Correlation Tables and Figures
Tables
Correlation
Markdown
Reporting

Creating various types of correlation tables to explore relationships between variables is a crucial part of data analysis. In this blog post, we’ll use the palmerpenguins…

Dr. Joscelin Rocha-Hidalgo
Mar 8, 2024

Five dice laid on a table that spell out the word TEACH. On the background, there are two piles of books.

My Teaching Philosophy
Teaching
Mentoring

Welcome to my blog, where I share my teaching philosophy. I believe in creating an engaging learning environment that sparks curiosity, critical thinking, and a lifelong…

Dr. Joscelin Rocha-Hidalgo
Oct 26, 2023

Two examples of tables rendered side-by-side. The top example titles Bottom Alignment which is an example of how you can set up 2 tables next to each other aligned by the bottom lines of the tables. The bottom example titles Top Alignment and this one has two tables set side-by-side but aligned by the lines on the top. Both examples also shows captions for each table and the overall figure formed by the tables set side-by-side.

Displaying Two gt Tables Side by Side in R Markdown for PDF Rendering
Tables
Markdown
Reporting

In data analysis and reporting, it’s often useful to compare and present multiple tables side by side. In this tutorial, we’ll learn how to create and display two gt tables…

Dr. Joscelin Rocha-Hidalgo
Sep 11, 2023

Flyer promoting the workshop titled 'Introduction to R'. The date of the workshop was Novermber 3rd, 15:00 to 17:00 GMT. Topics from the workshop are Interactive introduction, on-hand help, directive teaching, live demonstrations, Data inspection, analysis, & visualisation, write and run your own code!, FREE & OPEN TO ALL. Workshop speaker was Dr. Joscelin Rocha-Hidalgo. Organized by RIOTS.

Empowering Researchers: An Introduction to R at the RIOT Science Club Workshop
Tables
Markdown
Reporting

Joining the ranks of the dynamic RIOT Science Club, in November of 2022, I had the pleasure of delivering a talk titled “Introduction to R.” This workshop, hosted by the…

Dr. Joscelin Rocha-Hidalgo
Nov 3, 2022

Melanie Lawson (NEws4Jax reporter) introducing my interview about making sense of screen time for your kids.

Researchers say follow 3 C’s with kids and screen time
3Cs
Media
News Interview
English
Morning Show

This is an interview I made as part of a team examining the latest research on media use and young children.

Dr. Joscelin Rocha-Hidalgo
Jul 29, 2019
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