fetch_app: Launch Interactive Fetch App

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

Launch Interactive Fetch App

Description

Launch a Shiny app for interactive exploration of fetch calculation results. Click on site markers to view fetch rays and detailed information. Click anywhere on the map to analyze a new point.

Usage

fetch_app(fetch_data, title = NULL)

Arguments

fetch_data	Results from fetch_calculate
title	Optional app title

Details

Requires the shiny, leaflet, and base64enc packages (suggested dependencies).

The app displays:

• Interactive map with satellite imagery

• Site markers colored by exposure category

• Click markers to see fetch rays

• Popup with rose diagram and metrics

• Click anywhere on the map to analyze a new point

Value

Launches a Shiny app (does not return)

Examples

if (interactive()) {
  sites <- load_sites("my_sites.csv")
  lake <- get_lake_boundary(sites)
  results <- fetch_calculate(sites, lake)
  fetch_app(results)
}

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