A dataset containing example lake sampling sites from the Adirondack region of New York State. These synthetic but realistic coordinates demonstrate typical multi-lake sampling scenarios.
Format
A data frame with 12 rows and 5 variables:
- Site
Unique site identifier
- lake.name
Name of the lake
- latitude
Latitude in decimal degrees (WGS84)
- longitude
Longitude in decimal degrees (WGS84)
- datetime
Date and time of sampling (POSIXct)
Details
The dataset includes sites from four Adirondack lakes:
Blue Mountain Lake (3 sites)
Raquette Lake (4 sites)
Long Lake (2 sites)
Tupper Lake (3 sites)
Examples
# Load the dataset
data(adirondack_sites)
# View structure
str(adirondack_sites)
#> 'data.frame': 12 obs. of 5 variables:
#> $ Site : chr "Blue_Mountain_1" "Blue_Mountain_2" "Blue_Mountain_3" "Raquette_1" ...
#> $ lake.name: chr "Blue Mountain Lake" "Blue Mountain Lake" "Blue Mountain Lake" "Raquette Lake" ...
#> $ latitude : num 43.9 43.9 43.9 43.8 43.8 ...
#> $ longitude: num -74.4 -74.4 -74.4 -74.7 -74.7 ...
#> $ datetime : POSIXct, format: "2024-07-15 09:30:00" "2024-07-15 10:15:00" ...
# Use with lakefetch (requires internet connection)
# \donttest{
sites <- load_sites(adirondack_sites)
#> Loaded 12 rows with columns: Site, lake.name, latitude, longitude, datetime
#> Using columns: Latitude = latitude, Longitude = longitude
#> Detected datetime column: datetime
#> Preserved lake name column: lake.name
#> Final valid samples: 12
#> Detected location from column 'lake.name': 4 lakes
lake_data <- get_lake_boundary(sites)
#> Converting to spatial format...
#> Spherical geometry (s2) switched off
#> Downloading lake boundaries from OpenStreetMap...
#> Bounding box: [-74.7115, 43.7742, -74.3775, 44.2712]
#> Trying name-filtered query for: Blue Mountain Lake, Raquette Lake, Long Lake, Tupper Lake
#> Error: arguments imply differing number of rows: 1160, 0
#> Server error, trying another server in 10s...
#> Failed after 3 attempts: arguments imply differing number of rows: 1160, 0
#> Found 23 polygons
#> Found 1 multipolygons
#> Found 17 polygons
#> Found 1 multipolygons
#> Error: arguments imply differing number of rows: 3426, 0
#> Server error, trying another server in 10s...
#> Failed after 3 attempts: arguments imply differing number of rows: 3426, 0
#> Name-filtered query found results, skipping broad query
#> Combining results...
#> Total water bodies found: 42
#> Auto-detected UTM Zone: 18N
#> Transforming to UTM for analysis...
#> Processing lake polygons...
#> Filtered 4 water bodies < 1e-04 km2
#> Processed 38 unique lake polygons
#> Total area: 38.99 km2
#> Spherical geometry (s2) switched on
results <- fetch_calculate(sites, lake_data)
#> Effective fetch method: top3
#> Using default depth: 10 m
#> Assigning sites to lakes...
#> Checking direct intersections...
#> 1 sites matched directly
#> Checking 11 unmatched sites with 100m tolerance...
#> 1 additional sites matched within tolerance
#> Trying name-based matching using 'lake.name' column...
#> WARNING: No OSM lake found matching 'Blue Mountain Lake' (3 sites)
#> Matched 2 sites to 'Raquette Lake' via name matching from 'Raquette Lake'
#> Warning: Skipped 1 site(s) named 'Raquette Lake': too far from OSM lake 'Raquette Lake' (>500m). Site(s) may be on a different water body. Sites: Raquette_3_20240716
#> Matched 1 sites to 'Long Lake' via name matching from 'Long Lake'
#> WARNING: No OSM lake found matching 'Tupper Lake' (3 sites)
#> Site assignment summary:
#> Matched: 5/12
#> Unmatched: 7
#> Unmatched sites claim to be in: Blue Mountain Lake, Raquette Lake, Tupper Lake
#> Unmatched coordinate range:
#> Lat: 4852677.9675 to 4897537.8688
#> Lon: 526526.3106 to 545349.3624
#> TIP: Try lakefetch_options(gps_tolerance_m = 100) for larger buffer
#> TIP: Check if the lake exists in OpenStreetMap at openstreetmap.org
#> Sites per lake:
#> ID: 1871997: 2 sites
#> ID: 555231: 3 sites
#> Calculating fetch for multiple lakes...
#> Buffering sites 10m inward
#> Angle resolution: 5 degrees
#> Warning: Skipping 7 sites not matched to any lake: Blue_Mountain_1_20240715, Blue_Mountain_2_20240715, Blue_Mountain_3_20240715, Raquette_3_20240716, Tupper_1_20240718, Tupper_2_20240718, Tupper_3_20240718
#> Processing 2 lake(s)...
#> Using parallel processing with 2 cores for 2 lakes
#> Fetch calculation complete.
#> Adding lake context (NHD integration)...
#> Fetching NHD waterbodies...
#> Found 297 NHD waterbodies
#> Processing lake: 555231
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
#> Found 1 outlet(s) and 8 inlet(s)
#> Warning: st_centroid assumes attributes are constant over geometries
#> Processing lake: 1871997
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
#> Found 1 outlet(s) and 10 inlet(s)
#> Warning: st_centroid assumes attributes are constant over geometries
#> Lake context complete.
# }