This R package serves the spatial bounding box definitions we use in the Record Lab.
remotes::install_github("BigelowLab/cofbb")
Retrieve a table of all known bounding boxes.
cofbb::get_table()## # A tibble: 17 × 6
## name xmin xmax ymin ymax longname
## <chr> <dbl> <dbl> <dbl> <dbl> <chr>
## 1 maine -71.1 -67 43 47.5 State of Maine
## 2 gom -72 -63 39 46 Gulf of Maine
## 3 gom_carcharodon -74.9 -63 38.8 46 GoM for White Sharks
## 4 nwa -77 -51.5 37.9 56.7 Northwest Atlantic
## 5 nwa2 -77 -42.5 36.5 56.7 Northwest Atlantic 2
## 6 neac -74 -59.8 41 48.2 New England and Atlantic Canada
## 7 liac -74 -59.8 37.9 48.2 Long Island and Atlantic Canada
## 8 gosl -67 -56.5 44.4 50.5 Gulf of St. Lawrence
## 9 world -180 180 -90 90 World
## 10 world360 0 360 -90 90 World 360
## 11 njgb -74.9 -66 38.8 42.6 New Jersey to Georges Bank
## 12 nefsc_carcharodon -74.9 -65 38.8 46 NEFSC White Shark
## 13 cape_cod -69.2 -70.9 41.4 42.2 Cape Cod
## 14 cold_blob -30 -15 42 60 North Atalantic Cold Blob
## 15 warm_spot -74 -58 36 42 Warm Spot
## 16 nh -180 0 180 90 Northern Hemisphere
## 17 sh -180 -90 180 0 Southern Hemisphere
Retrieve one or more regions by name as a table.
cofbb::get_bb(c("world", "nwa2"), form = "table")## # A tibble: 2 × 6
## name xmin xmax ymin ymax longname
## <chr> <dbl> <dbl> <dbl> <dbl> <chr>
## 1 nwa2 -77 -42.5 36.5 56.7 Northwest Atlantic 2
## 2 world -180 180 -90 90 World
Retrieve one or more regions by name as a list of vector in
[xmin, xmax, ymin, ymax] order.
cofbb::get_bb(c("world", "nwa2"), form = "bb")## $world
## xmin xmax ymin ymax
## -180 180 -90 90
##
## $nwa2
## xmin xmax ymin ymax
## -77.0 -42.5 36.5 56.7
Or retrieve just one as a vector
cofbb::get_bb("gom", form = "bb")## xmin xmax ymin ymax
## -72 -63 39 46
There are also functions for making [-180, 180] <-> [0,360]
longitude transformations (to_180BB(), to_360BB()), splitting
bounding boxes (bb_split()) and determining if a box straddles a
particular line of longitude (bb_straddles()).
You can also retrieve bounding boxes as a data frame of one or more sf POLYGON objects.
x <- cofbb::get_bb(c("gosl", "gom", "nwa2"), form = "sf")
x## Simple feature collection with 3 features and 1 field
## Geometry type: POLYGON
## Dimension: XY
## Bounding box: xmin: -77 ymin: 36.5 xmax: -42.5 ymax: 56.7
## Geodetic CRS: WGS 84
## name geom
## 1 gosl POLYGON ((-67 44.4, -56.5 4...
## 2 gom POLYGON ((-72 39, -63 39, -...
## 3 nwa2 POLYGON ((-77 36.5, -42.5 3...
If you have leaflet installed you can draw a pretty map (otherwise a boring map is drawn.)
plot_bb(x)
