2023-10-16 09:55:10 -05:00
|
|
|
# load libraries
|
|
|
|
library(tidyverse)
|
|
|
|
library(nhdplusTools)
|
|
|
|
library(sf)
|
|
|
|
|
|
|
|
# load extent of map
|
|
|
|
extent <- read.csv(file = "extent.csv")
|
|
|
|
crs <- 26916
|
|
|
|
|
|
|
|
extent_poly <- st_polygon(
|
|
|
|
x = list(
|
|
|
|
cbind(
|
|
|
|
extent$longitude[c(1,2,2,1,1)],
|
|
|
|
extent$latitude[c(1,1,2,2,1)])
|
|
|
|
)
|
|
|
|
)
|
|
|
|
|
|
|
|
extent_poly <- st_sfc(extent_poly, crs=4326)
|
|
|
|
|
|
|
|
extent <- list(longitude_max = max(extent$longitude),
|
|
|
|
longitude_min = min(extent$longitude),
|
|
|
|
latitude_max = max(extent$latitude),
|
|
|
|
latitude_min = min(extent$latitude))
|
|
|
|
|
|
|
|
|
|
|
|
# get watershed areas
|
|
|
|
extent_huc <- get_huc(AOI = extent_poly, buffer = 0, type = "huc04")
|
|
|
|
|
|
|
|
# download data
|
|
|
|
download_nhdplushr("data", extent_huc$huc4, download_files = TRUE)
|