lakefetch: Calculate Fetch and Wave Exposure for Lake Sampling Points — lakefetch-package • lakefetch

The lakefetch package provides tools for calculating fetch (open water distance) and wave exposure metrics for lake sampling points. It downloads lake boundaries from OpenStreetMap, calculates directional fetch using ray-casting, and optionally integrates with NHD for hydrological context.

Main Functions

fetch_calculate: Main entry point for fetch calculation
load_sites: Load and validate site data
get_lake_boundary: Get lake boundary from OSM or file
add_lake_context: Add NHD hydrological context
fetch_app: Launch interactive Shiny app

Visualization

plot_fetch_map: Map of sites colored by exposure
plot_fetch_bars: Bar chart of effective fetch
plot_fetch_rose: Rose diagram for single site
create_ray_geometries: Create ray lines for mapping

Configuration

lakefetch_options: Get/set package options
lakefetch_reset_options: Reset options to defaults

See also

Useful links:

https://github.com/jeremylfarrell/lakefetch
Report bugs at https://github.com/jeremylfarrell/lakefetch/issues

Author

Maintainer: Jeremy Lynch Farrell farrej2@rpi.edu