Installation can be done with the devtools package.

library(devtools)
install_github("lochbika/Rwatershed",ref="main")

Alternatively, you can download/clone this repository and manually run the installation routines in RStudio.

This R package contains functions to compute the watershed segmentation of an input matrix. Call the respective implementation with the wrapper function watershed, for example

> watershed(x, method = "R")

where x is the input matrix.

The documentation is a good starting point. Then there is a small sample script (demonstration.R) that demonstrates the use with the sample data of this package. For a full tutorial and demonstration, check out the blog post on my personal website.