This document contains guidelines for the collaboration in the hereR R package.

Getting started

Ready to contribute? Here’s how to set up hereR for local development.

  1. Fork the repository to your GitHub account and clone the forked repository locally.
  2. Install the dependencies (check the DESCRIPTION file).
  3. Create a feature or bugfix branch as appropriate: git checkout -b feature/<feature-description> develop or git checkout -b bugfix/<bugfix-description> develop
  4. Work locally on the feature, make sure to add or adjust:
    • entries in
    • function documentation (run devtools::document() before commit)
    • tests for the feature (run export HERE_API_KEY="<YOUR-KEY>" && Rscript data-raw/internal.R && unset HERE_API_KEY to recreate package example data and API mocks)
    • vignettes
  5. Push changes to the new branch.
  6. If CI tests are passing, create a pull request on GitHub of your feature/... or bugfix/... branch into the develop branch of the original repository.

Gitflow workflow

Master and develop

The gitflow workflow uses two branches to record the history of the project. The master branch stores the official release history, and the develop branch serves as an integration branch for features. It’s also convenient to tag all commits in the master branch with a version number.


Each new feature should reside in its own branch. But, instead of branching off of master, feature branches use develop as their parent branch. When a feature is complete, it gets merged back into develop. Features should never interact directly with master.


This packages uses semantic versions. Once develop has aquired enough features for a release, fork a release (release/v<major>.<minor>.<patch>) branch off of develop. When CRAN has accepted the package submission, the release branch gets merged into master and tagged with a version number. In addition, it should be merged back into develop, which may have progressed since the release was initiated.

Documentation and coding style

Naming convention

Use snake_case for variable, argument and function name definitions and avoid capital letters. Dots (.) in function definitions are reserved for the functions and method dispatch in the S3 object system (e.g. print.my_class) or as prefix to hide functions (e.g. .my_hidden_function).

Package documentation

This packages uses roxygen2 for the package documentation.


#' Add together two numbers
#' @param x A number
#' @param y A number
#' @return The sum of \code{x} and \code{y}
#' @examples
#' add(1, 1)
#' add(10, 1)
add <- function(x, y) {
  x + y

Script header template

Add a header to CLI scripts according to the following template:

#!/usr/bin/env Rscript
# -----------------------------------------------------------------------------
# Name          :example_script.R
# Description   :Short description of the scripts purpose.
# Author        :Name <>
# Date          :YYYY-MM-DD
# Version       :0.1.0
# Usage         :./example_script.R
# Notes         :Is there something important to consider when executing the
#                script?
# =============================================================================


Add your GitHub username to the bugfix or feature entry in the to ensure credits are given correctly:

# version x.x.x.9000

* Added <feature description> (@<github_username>, [#1](
* Bugfix: <description> (@<github_username>, closes [#2](

Code of conduct

Please note that this project is released with a Contributor Code of Conduct. By contributing to this project you agree to abide by its terms.