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Why should I use the here package when I’m already using projects?

Blog post: https://bit.ly/whyherepkg

Malcolm Barrett

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A Song of Fire and Workflows

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A Song of Fire and Workflows

If the first line of your R script is

setwd("C:\Users\jenny\path\that\only\I\have")

I will come into your office and SET YOUR COMPUTER ON FIRE 🔥.

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A Song of Fire and Workflows

If the first line of your R script is

setwd("C:\Users\jenny\path\that\only\I\have")

I will come into your office and SET YOUR COMPUTER ON FIRE 🔥.


If the first line of your R script is

rm(list = ls())

I will come into your office and SET YOUR COMPUTER ON FIRE 🔥.

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Only you can preventive computer fires

Use RStudio projects.

Use here() from the here package to write file paths

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Only you can preventive computer fires

Use RStudio projects.

Use here() from the here package to write file paths

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Only you can preventive computer fires

Use RStudio projects.

Use here() from the here package to write file paths

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Why should I use the here package when I'm already using projects?

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here_here
|--data
    |--mtcars.csv
|--figs
    |--mpg_hp.png
|--rmd
    |--01_read_data.Rmd
    |--01_read_data.pdf
|--scripts
    |--read_data.R
|--here_here.Rproj

Example Project: https://github.com/malcolmbarrett/here_here

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here_here
|--data
    |--mtcars.csv
|--figs
    |--mpg_hp.png
|--rmd
    |--01_read_data.Rmd
    |--01_read_data.pdf
|--scripts
    |--read_data.R
|--here_here.Rproj

Example Project: https://github.com/malcolmbarrett/here_here

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here works from the project root up

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In rmd/01_read_data.Rmd:

library(tidyverse)
read_csv("data/mtcars.csv")
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In rmd/01_read_data.Rmd:

library(tidyverse)
read_csv("data/mtcars.csv")
## Error: 'data/mtcars.csv' does not exist in current working directory
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library(here)
read_csv(here("data", "mtcars.csv"))
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library(here)
read_csv(here("data", "mtcars.csv"))
## # A tibble: 32 x 11
##      mpg   cyl  disp    hp  drat    wt  qsec    vs    am  gear  carb
##    <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
##  1  21       6  160    110  3.9   2.62  16.5     0     1     4     4
##  2  21       6  160    110  3.9   2.88  17.0     0     1     4     4
##  3  22.8     4  108     93  3.85  2.32  18.6     1     1     4     1
##  4  21.4     6  258    110  3.08  3.22  19.4     1     0     3     1
##  5  18.7     8  360    175  3.15  3.44  17.0     0     0     3     2
##  6  18.1     6  225    105  2.76  3.46  20.2     1     0     3     1
##  7  14.3     8  360    245  3.21  3.57  15.8     0     0     3     4
##  8  24.4     4  147.    62  3.69  3.19  20       1     0     4     2
##  9  22.8     4  141.    95  3.92  3.15  22.9     1     0     4     2
## 10  19.2     6  168.   123  3.92  3.44  18.3     1     0     4     4
## # … with 22 more rows
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here bottles up several best practices

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  1. Use RStudio Projects
  2. 🔥Avoid setwd("/absolute/paths") and rm(list = ls())🔥
  3. Use here::here() to work from the project up
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malcolmbarrett

@malco_barrett

malco.io

Blog post: https://bit.ly/whyherepkg

Slides created via the R package xaringan.

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A Song of Fire and Workflows

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