Sample Size Determinants
R Markdown, Shiny Interactive
An article reviewing determinants of sample size in population-mean estimation. Includes an interactive visualization modeling the effects of standard deviation, margin of error, and confidence level on sample size and drawing multiple samples from the same population. The image links to the article on shinyapps.io.
Used Car Prices & Depreciation 1999-2018
Executive Dashboard
Executive Dashboard
Tableau Dashboard
A dashboard displaying 2020 prices and depreciation (from 2019) of various used car makes and model 1999-2019. The image links to the live dashboard on Tableau Public.
ease_aes() report & demo
R Markdown
A description and demo of gganimate's ease_aes() function. Written in R-Markdown. Published on R-bloggers.
Space Launches per Year by Country
R Animated
An animated bar chart showing space launches per year by country. A marked drop in launches by the USSR (labled Russia) at the time of its dissolution in the late 1980s and early 1990s is evident, as is Chinese ascendency in the late 2010s.
20 Brightest Extrasolar Stars as Seen from Earth
d3 Interactive
A bar chart displaying apparent magnitude, absolute magnitude, and distance from Earth of the 20 brightest extrasolar stars. The absolute magnitude of the Sun is 4.83, about the same as Alpha Centauri.
App Mag: Apparent magnitude. The brightness as seen from Earth.
Abs Mag: Absolute Magnitude. The brightness from 10 parsecs (32.6 light-years).
Distance LY: The distance from Earth in light-years.
Note that lower magnitude is brighter.
App Mag: Apparent magnitude. The brightness as seen from Earth.
Abs Mag: Absolute Magnitude. The brightness from 10 parsecs (32.6 light-years).
Distance LY: The distance from Earth in light-years.
Note that lower magnitude is brighter.
Top Rated Chess Players, World Champions, & Engines 1900-2018
Tableau Interactive
A multi-chart Tableau interactive visualization of top chess players 1900-2018; top players by decade; world champions' tenure, ratings, and rankings; and a visual history of computer chess engine development including a strength comparison with contemporary human world champions. The image links to the live visualization on Tableau Public.
US Terrorist Attacks 1980-2017
Tableau Interactive
Terrorist attacks on US soil in an interactive Tableau visualization using maps and timelines. The image links to the live visualization on Tableau Public.
2020 US Presidential Convention Speeches
R Wordcloud
R wordclouds of the top 100 words in each of the candidates' 2020 convention speech.
Circle-packed chemical elements
The Chemical Elements
The Elements by Group & Atomic Weight
| Name | |
| Group | |
| Atomic Wt |
d3 circle packing
Circle-packed Chemical Elements