It appears you don't have a PDF plugin for this browser. You can click here to download the reference manual.
0.2.4 by Daniel Oehm, a year ago
https://github.com/doehm/cropcircles
Report a bug at https://github.com/doehm/cropcircles/issues
Browse source code at https://github.com/cran/cropcircles
Authors: Daniel Oehm [aut, cre]
Documentation: PDF Manual
MIT + file LICENSE license
Imports glue, magick, purrr
See at CRAN