lakefetch-package: lakefetch: Calculate Fetch and Wave Exposure for Lake...

In lakefetch: Calculate Fetch and Wave Exposure for Lake Sampling Points

lakefetch: Calculate Fetch and Wave Exposure for Lake Sampling Points

Description

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

Author(s)

Maintainer: Jeremy Lynch Farrell [e-mail]

See Also

Useful links:

• https://github.com/jeremylfarrell/lakefetch

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

lakefetch documentation built on March 20, 2026, 5:10 p.m.