LeafContourEFD Analysis

Author

Kaede Konrai

Published

April 9, 2026

This repository contains analysis code and reproducibility materials for the LeafContourEFD manuscript. The software itself is available at: leaf-contour-efd

Requirements

To reproduce the analysis, you need:

  • R (recommended version: 4.3.1 or higher)
  • Quarto
  • the R packages required by this project

If you install renv, you can install the required R packages by executing renv::restore() (see below). All analysis code is written in R version 4.3.1 (R 2026).

Optional tools

  • Air: R code formatter.
  • Positron: IDE used for all analyses in this project, but not required to run the code.

R environment setup

In this repository, I use renv to manage R package dependencies. Please execute command below after installing renv.

# install.packages("renv") # if not installed
renv::restore()

Data

Raw data are available on Dryad (DOI: in preparation).

Tracked-vs-external data policy is documented in data/README.md.

This project may require setting a local data directory via environment variable. Create a .Renviron file in the project root and add:

.Renviron
PROJECT_DATA_DIR=/path/to/your/data

For example:

  • macOS: /Users/yourname/Dropbox/project_data
  • Windows: C:/Users/yourname/Dropbox/project_data

References

Bonhomme, Vincent, Sandrine Picq, Cédric Gaucherel, and Julien Claude. 2014. “Momocs : Outline Analysis Using R.” Journal of Statistical Software 56 (13). https://doi.org/10.18637/jss.v056.i13.
Kuhl, Frank P, and Charles R Giardina. 1982. “Elliptic Fourier Features of a Closed Contour.” Computer Graphics and Image Processing 18 (3): 236–58. https://doi.org/10.1016/0146-664X(82)90034-X.
R: A Language and Environment for Statistical Computing. 2026. Vienna, Austria. https://www.R-project.org/.