map_nhdplus: Make Interactive Map of NHDPlus

In nhdplusTools: NHDPlus Tools

Make Interactive Map of NHDPlus

Description

Given a list of outlets, get their basin boundaries and network and return a leaflet map in EPSG:4326.

Usage

map_nhdplus(
  outlets = NULL,
  bbox = NULL,
  streamorder = NULL,
  nhdplus_data = NULL,
  gpkg = NULL,
  flowline_only = NULL,
  plot_config = NULL,
  overwrite = TRUE,
  cache_data = NULL,
  return_map = FALSE
)

Arguments

outlets	list of nldi outlets. Other inputs are coerced into nldi outlets, see details.
bbox	object of class bbox with a defined crs. See examples.
streamorder	integer only streams of order greater than or equal will be returned
nhdplus_data	geopackage containing source nhdplus data (omit to download)
gpkg	path and file with .gpkg ending. If omitted, no file is written.
flowline_only	boolean only subset and plot flowlines only, default=FALSE
plot_config	list containing plot configuration, see details.
overwrite	passed on the subset_nhdplus.
cache_data	character path to rds file where all plot data can be cached. If file doesn't exist, it will be created. If set to FALSE, all caching will be turned off – this includes basemap tiles.
return_map	if FALSE (default), a data.frame of plot data is returned invisibly in NAD83 Lat/Lon, if TRUE the leaflet object is returned

Details

map_nhdplus supports several input specifications. An unexported function "as_outlet" is used to convert the outlet formats as described below.

1. if outlets is omitted, the bbox input is required and all nhdplus data in the bounding box is plotted.

2. If outlets is a list of integers, it is assumed to be NHDPlus IDs (comids) and all upstream tributaries are plotted.

3. if outlets is an integer vector, it is assumed to be all NHDPlus IDs (comids) that should be plotted. Allows custom filtering.

4. If outlets is a character vector, it is assumed to be NWIS site ids.

5. if outlets is a list containing only characters, it is assumed to be a list of nldi features and all upstream tributaries are plotted.

6. if outlets is a data.frame with point geometry, a point in polygon match is performed and upstream with tributaries from the identified catchments is plotted.

See plot_nhdplus for details on plot configuration.

Value

data.frame or leaflet map (see return_map)

Examples

map_nhdplus("05428500")

map_nhdplus("05428500", streamorder = 2)

map_nhdplus(list(13293970, 13293750))

source(system.file("extdata/sample_data.R", package = "nhdplusTools"))

map_nhdplus(list(13293970, 13293750), streamorder = 3, nhdplus_data = sample_data)

#return leaflet object
map_nhdplus("05428500", return_map = TRUE)

nhdplusTools documentation built on Oct. 2, 2023, 5:06 p.m.