jhelvy
Assistant Professor in EMSE @ GWU; Engineering; Sustainability; Technology Innovation Policy; EVs; China; Data Science; Rstats; Python; Swing dancing
George Washington UniversityWashington, D.C.
Pinned Repositories
cbcTools
An R package with tools for designing choice based conjoint (cbc) survey experiments and conducting power analyses
distillery
A distill blog and showcase about building distill websites and blogs!
formr4conjoint
A simple demo of using formr.org to create a choice-based conjoint survey
kyria_3d_cases
logitr
Fast estimation of multinomial (MNL) and mixed logit (MXL) models in R with "Preference" space or "Willingness-to-pay" (WTP) space utility parameterizations in R
p4a
Source code for my book "Programming for Analytics in R"
renderthis
An R package for building xaringan slides into multiple outputs, including html, pdf, png, gif, pptx, and mp4.
splitKbCompare
An interactive tool for comparing layouts of different split mechanical keyboards
stanTuneR
This code uses the algebra solver in Stan (https://mc-stan.org/) to find the parameters of a distribution that produce a desired tail behavior.
wireless-corne
Build log and photo gallery for my Wireless Corne keyboard
jhelvy's Repositories
jhelvy/stanTuneR
This code uses the algebra solver in Stan (https://mc-stan.org/) to find the parameters of a distribution that produce a desired tail behavior.
jhelvy/kyria_3d_cases
jhelvy/kyria
Files related to the Kyria keyboard.
jhelvy/qmkJsonConverter
R code to convert the .json file from the QMK configurator into a keymap.c file
jhelvy/iris-rev2
Build log of my Iris keyboard (a.k.a. the "Altoids Can")
jhelvy/surveys-with-formr
Files for my rstudio::conf 2021 lightning talk: "Using formr to create R-powered surveys with individualized feedback"
jhelvy/gglabelr
Interactive shiny app to create labels on ggplot
jhelvy/scraperToolkit
Toolkit for webscraping in R and Python
jhelvy/tra2015
Raw data and replication of results from our 2015 publication in Transportation Research Part A
jhelvy/2021-sawtooth-conf
Slides from my presentation at the 2021 Sawtooth Software Conference
jhelvy/2021-useR-healthy-hands
Slides for my 2021 useR conference ⚡️ talk on software and hardware solutions for more ergonomic typing ⌨️ ❤️ 🙌 ❤️
jhelvy/awesome-split-keyboards
A collection of ergonomic split keyboards ⌨
jhelvy/dcTravelSurvey
jhelvy/fastDummies
The goal of fastDummies is to quickly create dummy variables (columns) and dummy rows.
jhelvy/ggannotate
Interactively annotate ggplots
jhelvy/KE-complex_modifications
Karabiner-Elements complex_modifications rules
jhelvy/keyboardCompare
An R Shiny app that analyzes a text block to compare keystrokes using Qwerty, Dvorak, Workman, and Norman keyboard layouts.
jhelvy/RCourses
A running list of open source courses in `R`
jhelvy/rmarkdown
Dynamic Documents for R
jhelvy/rplots
A how-to guide of a bunch of different plot types in R
jhelvy/tmfConjoint
Compute statistics using Google Maps API