tidyverse-forget.Rmd

---
title: "Tidyverse functions that I always forget"
author: "Jessica Minnier"
date: '`r Sys.Date()`'
output:   
  github_document:
    toc: yes
---

<!-- The .md file is generated from a .Rmd file, please edit the .Rmd file! -->

```{r setup, include=FALSE}
library(tidyverse)
library(readxl)
library(skimr)
library(janitor)
library(jmmisc)
#### Global chunk options -----------------------------

knitr::opts_chunk$set(
  eval       = TRUE,    # whether to run code in code chunk
  include    = TRUE,    # whether to include the chunk output
  echo       = TRUE,   # Whether to show code chunk in final output
  error      = TRUE,    # whether to display error messages
  message    = FALSE,   # whether to preserve messages
  warning    = FALSE,   # whether to preserve warnings
  comment    = "#>",    # a character string to append at start
                        # of each line of results in final document
  tidy       = FALSE,   # whether to tidy code chunks for display
  dpi        = 96, 
  fig.width  = 6,       # consistent width for figures
  fig.asp    = 0.618,   # the golden ratio, can be adjusted in individual chunks
  out.width  = "100%",   # controls the output size
  fig.align  = "center" # give plot room to breathe
)
```


- [`tibble::enframe()`](https://tibble.tidyverse.org/reference/enframe.html) converts a named vector to a tibble and `tibble::deframe()` does the opposite
- [`forcats::fct_infreq()`](https://forcats.tidyverse.org/reference/fct_inorder.html) reorders a character or factor column in place, and can be used in ggplot:
```{r}
ggplot(mtcars %>% mutate(carb = as.character(carb)), aes(fct_infreq(carb),fill=carb)) + geom_bar()
```

- [`stringr::str_detect`](https://stringr.tidyverse.org/reference/str_detect.html) can be used to search for multiple strings in a vector by using `paste` collapse:

```{r}
fruit <- c("apple", "banana", "pear", "pinapple")
mystrings <- c("apple","pear","grape")
str_detect(fruit, paste(mystrings,collapse="|"))
```