~/talk

Reproducible Shiny apps with shinymeta

Talkat rstudio::conf 2019 · 2019-01-15..01-18· [web-platform, developer-experience]
slides:none on file

shinymeta is an R package that captures the actual domain logic inside Shiny apps and emits runnable R code and a zip report so results are reproducible outside the app. It uses metaReactive/metaReactive2/metaExpr to mark logic, the .. operator to tag reactive reads that become variables or literal values, and expandChain and build_rmd_bundle to generate minimal R code plus an Rmd and rendered output. Examples: CRAN downloads time series (zoo rolling average + ggplot) and an uploaded-data ANOVA; meta execution (expandChain) is separate from normal runtime so app performance is unchanged.

AI-written summary · about

  1. 0:00Start
  2. 2:08Interactivity is great, but reproducibility suffers
  3. 5:23Example: basic Shiny app Package
  4. 5:44The goal: reproducible plot code
  5. 15:18Huzzah!
  6. 15:36Not the best user experience
  7. 15:49downloadButton() + buildRmdBundle()
  8. 17:05More advanced cranview app
  9. 17:54'Programmable' dynamic reports
  10. 18:25Reproducible ANOVA GUI
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