In REPLesentR: Presentations in the REPL

knitr::opts_chunk$set(eval = FALSE)

REPLesentR: Presentations inside the R REPL

author: Sebastian Warnholz
date: r Sys.Date()
email: [e-mail]

Features

• Tools to do presentations inside the R REPL
• Take advantage of RMarkdown and pandoc
• Evaluate code on slides
• Integrate data visualisations using the fantastic 'txtplot' package

//empty

• Wish-list:
  • Syntax highlighting on slides
  • Colours on slides
  • Satisfying set of formats for slides
  • Number of slide in lower right corner

Commands in Presentation Mode

• n -- next slide
• p -- previous slide
• f -- first slide
• l -- last slide
• e -- evaluate code
• ee -- evaluate code until here
• cc -- recompile slide deck
• q -- quit presentation
• h -- show this help

Evaluation of code

Try this now by typing 'e'

//code

hi <- "Hi\n"
cat(hi)

Slide formats

• //center
  • needs to be at the beginning of a line
  • in the title it defines the slide layout
• //code
  • put this right in front of a code block
  • will make this code block available for evaluation
• //empty
  • for empty lines

Slide formats examples

//center type 'e' to see the source of this slide

//empty

//code

.fileName <- system.file("Introduction.Rmd", package = "REPLesentR")
.allSlide <- readLines(.fileName)
.thisSlidePosition <- grep("^# slide formats examples", .allSlide, TRUE)
.thisSlide <- .allSlide[.thisSlidePosition:(.thisSlidePosition + 14)]
for (row in .thisSlide) cat(row, "\n")

//center Make great plots with 'txtplot'!

set.seed(2)
x <- rnorm(20)
y <- 1 + x * 5 + rnorm(20)
txtplot::txtplot(x, y)

Start from an example

You can find the source of this presentation by typing 'e':

//code

print(system.file("Introduction.Rmd", package = "REPLesentR"))

//center Inspiration for this package comes from:

//center https://github.com/marconilanna/REPLesent

//center THE END!

REPLesentR documentation built on Dec. 1, 2019, 1:19 a.m.