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splitKbCompare
An interactive tool for comparing layouts of different split mechanical keyboardsrenderthis
An R package for building xaringan slides into multiple outputs, including html, pdf, png, gif, pptx, and mp4.distillery
A distill blog and showcase about building distill websites and blogs!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 RstanTuneR
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.kyria_3d_cases
qmkJsonConverter
R code to convert the .json file from the QMK configurator into a keymap.c filesurveydown
An attempt to build a markdown-based survey platform using Quarto & ShinyjKeyboard
Files for creating my custom keyboard, including my Karabiner-Elements settings and WASD Keyboard layout filesformr4conjoint
A simple demo of using formr.org to create a choice-based conjoint surveylexis
A theme for xaringan slidesjhelvy_distill
Source files for my personal website, built using the {distill} R package and deployed with netlifymlogitCars
An example of estimating choice models in R using the mlogit packagejph
A bunch of useful functions for working in Riris-rev2
Build log of my Iris keyboard (a.k.a. the "Altoids Can")solar-learning-2021
This repository contains the data and code to reproduce results from our study titled "Quantifying the cost savings of global solar photovoltaic supply chains". The link below is to an app to assess the sensitivity of our study outcomes to different modeling assumptions.jhelvy_quarto
Source files for my personal website, built using Quarto and deployed with Netlifyrenderthistemp
Render slides and other media into different formatscbcTools
An R package with tools for designing choice based conjoint (cbc) survey experiments and conducting power analysesmaddTools
An R package of functions for the GWU course EMSE 6035: Marketing Analytics for Design Decisionscharts
A repo of reproducible chartscoding-with-ai
conjointTools
An R package with tools for designing choice based conjoint (cbc) survey experiments and conduction power analysessurveys-with-formr
Files for my rstudio::conf 2021 lightning talk: "Using formr to create R-powered surveys with individualized feedback"tra2015
Raw data and replication of results from our 2015 publication in Transportation Research Part Azmk-config-corne
slides
Slides for talks I've givenfactorlock
Set factors levels based on row ordercv
My CV, generated using R, Quarto, and a Googlesheet2023-qux-conf-conjoint
Content for my workshop at the 2023 Quant UX Conference on Open Source Conjoint in Rsmartcharging
gglabelr
Interactive shiny app to create labels on ggplotp4a
Source code for my book "Programming for Analytics in R"scraperToolkit
Toolkit for webscraping in R and Pythonjhelvy.github.io
stories-with-data
Workshop on telling stories with datacarsheet
Webscraping of the data at carsheet.ioLove Open Source and this site? Check out how you can help us