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coglyphr: Compute Glyph Centers of Gravity from Image Data

Overview

coglyphr is an R package for computing the center of gravity (COG) of character-like binary images using three different methods. This package provides functions for estimating stroke-based, contour-based, and potential energy-based COG. It is useful for analyzing glyph structure in areas such as visual cognition research and font development.

The current version supports the following COG computation methods:

For details on each function, refer to the function references.

Installation

You can install coglyphr from GitHub using devtools:

# Install devtools if not already installed
if (!requireNamespace("devtools", quietly = TRUE)) install.packages("devtools")

# Install coglyphr
devtools::install_github("mutopsy/coglyphr")

Dependencies

This package requires:
* R (>= 4.4.0)
* dplyr
* imager
* sp

Usage

After installation, you can load this package using the library function.

library(coglyphr)

Citation

A paper describing this package has been submitted to the Journal of Open Source Software (JOSS).
Until it is formally published, please cite the following preprint:

Muto, H. (2025). coglyphr: An R package to compute glyph centers of gravity from image data. Jxiv. https://doi.org/10.51094/jxiv.1531

Version History

See the Changelog on pkgdown site for the full changelog.

References

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.