Software

R Packages

ggdiagram

An object-oriented approach to making diagrams via ggplot2

Complex diagrams can take a long time to get right. The ggdiagram package can take away much of the burden of tedious calculation.

A regression path model

Latent variable path diagram with all variables scaled to their variance sizes.

A hierarchical model of abilities

simstandard

R package for simulating data using standardized coefficients

Tutorial

In the model below, the path coefficients are standardized. You would like to simulate the variables in the model, but you do not know the disturbance and residual variances. The simstandard package can help.

A standardized latent variable model

unusualprofile

An R package for detecting unusual scores in a test profile

Tutorial

This package estimates how unusual a multivariate normal profile is.

ggnormalviolin

A ggplot2 extension package for creating normal violin plots

I needed to show confidence intervals and conditional normal distributions with specific means and standard deviations. I wrote the ggnormalviolin package to make this happen.

It makes plots like this:

Example plot made with ggnormalviolin

psycheval

Functions useful for psychological evaluations

This package is still in a preliminary state, just like Individual Psychometrics, the book it accompanies.

Mulivariate Confindence Intervals

WJSmisc

A set of functions I find convenient to have readily available to me

Whoa! How did you place those labels so perfectly?

spiro

An R package for making digital spirographs

Tutorial

My Gallery

Making digital spirographs is fun! I made an R package called spiro that can make animated spirographs like this one:

arrowheadr

R package for making a custom arrowheads for ggplot2 using ggarrow

Tutorial

The arrowheadr package allows one to create custom arrowheads that can be used with the ggarrow package.

Quarto Extensions

apaquarto

A Quarto Extension for Creating APA 7 Style Documents

This is a quarto article template that creates APA Style 7th Edition documents in .docx, .html. and .pdf. I made this extension for my own workflow. If it helps you, too, I am happy. The output of the template is displayed below:

Unable to display PDF file. Download instead.