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@@ -27,30 +27,29 @@ Also run `install.packages(c("tidyverse", "rmarkdown", "knitr"))` to install the |
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## Directory structure |
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The project contains three subdirectories: **Data/**, **Docs/** and **Rmd/**. |
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The project contains two subdirectories: **Data/** and **Docs/**. |
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**Data/** also contains a **Raw/** subdirectory. |
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**Data/Raw/** should contain the raw data when they exist as files (csv, xls(x), SQLite databases, SAS files, SPSS files, etc.). |
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**Docs/** should contain all external documents you have about the project (synopsis, context articles/presentations, etc.) |
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**Rmd/** will contain the files used to communicate the results. |
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## Scripts |
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Four scripts are already present, populated with boilerplate code for each of the steps. |
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Five scripts are already present, populated with boilerplate code for each of the steps. |
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Each of the scripts is an Rmd file, though they are not supposed to be knitted but more or less used like a notebook. (See [blogpost] for an idea of my workflow) |
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Packages `dplyr`, `magrittr`, `tidyr`, and `purrr` can be useful all the way. |
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**Every step makes a "savepoint" of your work, allowing you to rapidly iterate on any of the steps without having to re-run the previous ones (unless you've changed something up in the chain).** |
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### 01_Import.R |
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### 01_Import.Rmd |
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The first script is used to import raw data (whatever the source) and save a local csv copy in **Data/**. |
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Useful packages from the tidyverse here are `readr`, `readxl`, `rvest`, `haven`, and `jsonlite`. |
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Having the data ready as simple csv is useful to always be able to start from the beginning, even if the original source is unavailable. |
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### 02_Tidy.R |
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### 02_Tidy.Rmd |
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This step consists mostly of "non-destructive" data management: assign types to columns (factors with correct/human readable levels, dates, etc.), correct/censor obviously abnormal values and errors), transform between *long* and *wide* format, etc. |
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Useful packages here are `lubridate`, `stringr`, and `forcats`. |
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@@ -59,7 +58,7 @@ The results are saved in a **Data/tidy.rds** file. |
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After this second step, you will have your full data ready to use in R and shouldn't have to run the first two steps anymore (unless you get hold of new data). |
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### 03_Transform.R |
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### 03_Transform.Rmd |
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This script is for data transforming. It will contain all transformations of the data to make them ready for analyses. |
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Some "destructive" data management can occur here, such as dropping variables or observations, or modifying the levels of some factors. |
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@@ -67,7 +66,7 @@ Useful packages here are `forcats`, `lubridate`, and `stringr`. |
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The results are saved in a **Data/transformed.rds** file. |
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### 04_Analyze.R |
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### 04_Analyze.Rmd |
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This script will contain more data transforming, and the analyses with production of the resulting tables and plots. |
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There is a bit of an overlap between **03_Transform.R** and **04_Analyze.R** as it is often an iterative process. Both files can be merged into one, but it can be useful to have some time-consuming transformations in a separate script and have the results handy. |
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@@ -93,7 +92,7 @@ results |
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└─ figure3 |
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``` |
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### Rmd/report.Rmd |
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### 05_Report.Rmd |
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The Rmd file should not contain *any* literal values: every number, table, graph *has* to come from the results object (in its original form). |
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Only some really minor cosmetic modifications should be made then (running `prettyNum` on numerics or table columns, `select`/`filter`/`arrange`/`rename` on the full tables, etc.) |
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