sedzinfo

R packages, applications and tutorials.

vignettes

Tutorials and worked examples in R: adaptive testing with EAP scoring, data visualisation, machine learning, psychometrics and scale validation.

Quarto websites

rwf

R package for statistical reporting and visualisation of common methods in psychology: ANOVA, regression, t-tests, CFA, IRT and Thurstonian models.

R package

worldbankmodular

Shiny application for exploring World Bank development indicators: country and indicator comparisons, population pyramids, ranked bars, correlations and maps.

Shiny application

Apps

Hosted on shinyapps.io, so an app may take a few seconds to wake up.

IRT models

Explore item response theory models and how their parameters shape item and test curves.

Shiny app · psychometrics

MLE in IRT

See how maximum likelihood estimates ability from a pattern of item responses.

Shiny app · psychometrics

World Bank

Browse and compare World Bank development indicators across countries and years.

Shiny app · open data

Crypto time series

Plot and explore cryptocurrency prices over time.

Shiny app · time series

COVID-19 time series

Follow COVID-19 cases and deaths over time by country.

Shiny app · time series

Pimoroni Enviro

Readings from a Pimoroni Enviro sensor board: temperature, humidity, pressure and more.

Shiny app · sensors

Live dashboards

Sensor readings streaming into Grafana.

Radiation

Background radiation from a Geiger counter: counts per minute and dose rate in Sv/h.

Grafana dashboard

Environment Plus

Pimoroni Enviro+ readings: temperature, humidity, pressure, light, gases (NH3, oxidising, reducing) and particulate matter.

Grafana dashboard

Environment

Pimoroni Enviro readings: temperature, humidity, pressure, light and proximity.

Grafana dashboard