In Athanasiamo/tidyquintro: Quick Intro to Tidyverse

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knitr::opts_chunk$set(echo = TRUE, 
                      message = FALSE, 
                      error = FALSE, 
                      warning = FALSE)

# These are the defaults
xaringanExtra::use_extra_styles(
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  mute_unhighlighted_code = TRUE  #<<
)

library(knitr)
library(tidyquintro)

Timeline

• Introduction to tidyverse concepts (15 minutes)

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• Tidy data wrangling - with translations to base-R (~ 2 hours)
• plotting data with ggplot2 (~25 min)
• sub-setting data with dplyr (~25 min)
• chaining commands with the pipe |> (~10 min)
• adding and altering variables with dplyr (~25 min)

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• Lunch break (30 min)

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• Tidy data reshaping & summaries - avoiding loops (~ 1.5 hours)
• pivoting data with tidyr (~25 min)
• grouped summaries with dplyr (~25 min)
• working with nested data using purrr (~25 min)

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All parts (except first intro) come with small exercises and breaks between.

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What is the Tidyverse?

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The packages

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Covered here

|Package|Functions| |------|--------|
| dplyr | data manipulation - altering and adding variables in a dataset | | tidyr | data tidying - changing data shape and structure | | ggplot2 | data visualisation | | purrr | Enhancements on functional programming | ]

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The packages

.pull-left[

Covered here

|Package|Functions| |------|--------|
| dplyr | data manipulation - altering and adding variables in a dataset | | tidyr | data tidying - changing data shape and structure | | ggplot2 | data visualisation | | purrr | Enhancements on functional programming | ]

.pull-right[

Not covered

|Package|Functions| |------|--------|
| readr | easy and fast importing of data | | tibble | variations on the R data.frame | | forcats | working with factors/categorical data | | stringr | working with strings/characters | ]

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What's so special about them?

• made to work with data sets (tibbles / data.frames)
  • geared towards data-scientists and folks working with rectangular data

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• made to work together
  • naming and argument conventions

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• use function names similar to spoken language
  • verbs and adverb function names

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• arguments can be chained (piped) together
  • avoids saving intermediary objects
  • input always as first argument

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• packages are actively developed and maintained by RStudio
  • functions will not abruptly or without warning and careful thought change behaviour

Athanasiamo/tidyquintro documentation built on Oct. 11, 2022, 7:15 p.m.