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wch

Winston Chang

Recently Published

Applying a function over rows of a data frame
HTML dependency rendering
Speeding up (some) tree-walking operations
Speeding up (some) tree-walking operations
Using AWS S3 for caching with Shiny and memoise
Quosure problems
Profile of digest() after enhancements
Profile of digest()
crandb profile - version 2b, with dev version of rlang
crandb profile - version 2b
From https://gist.github.com/wch/3352f6fa0a843b4aa2f5839bb635a193
crandb profile - version 2a
From https://gist.github.com/wch/3352f6fa0a843b4aa2f5839bb635a193
Bash startup time
Profvis data display bug 2
Profvis data display bug
Shinytest diff example with image data
Introduction to profvis
Understanding package compatibility across R version upgrades (draft)
Shinytest draft document
Document
profvis example
Applying a function over rows of a data frame
profvis
Profvis memory profiling test
profvis ggplot2 example
DFA speed test with 230KB file
Publish HTML
profvis example
Profvis intro
Profvis knitr
Profvis knitr
Profvis example
Profvis example
Profvis example
Proto2 proposal
Checking for rows duplicated across data sets
Image resize test
Shiny 0.11 migration notes
For-loop timings
Times for accessing objects in environments
Times for accessing objects in environments
2014-09-10-progress
Shiny 0.10.2 adds progress indicators.
Single file Shiny apps
Shiny 0.10.2 adds support for single-file applications.
Reactive time tests with R6 Classes
Reactive timings with R6 classes
Reactive timings with reference classes
Introduction to R6 Classes
Portable R6 classes
reactive_timings
Timings for calling reactive expressions
do.call, and sys.call vs. match.call
Reference class performance tests
Functions: memory and speed tests
Reference class performance tests
R string collection/writing speed tests
if-else, ifelse, and switch timings
for, lapply, vapply timings
Arrival rates of “Atheist”-labeled packages
for, lapply, vapply timings
Playing with environments
Examples for controls
Making plots using model objects you have created outside of ggplot2
Facet header examples
Test document
Hurricane data test
gtable test with ggplot2
gtable tests - take 4
gtable tests - take 3
gtable tests - take 2
gtable tests
Spiral arc calculations
Experiments with grid.draw