Attach static bathymetry to a table of points — attach

Bathymetry does not vary in time, so the same value is attached to every observation at a location regardless of its date.

Usage

attach_bathymetry(dat, bathy, vars = NULL, coords = c("lon", "lat"))

Arguments

dat: a data frame with coordinate columns, or an sf POINT object
bathy: a SpatRaster from fetch_bathymetry()
vars: which layers to attach; NULL uses all of them
coords: names of the longitude and latitude columns, ignored for sf input

Value

dat with one column per requested bathymetry variable

Details

Accepts either a plain data frame with coordinate columns or an sf POINT object, so it works on observations and on accessEnvDat() output alike.

Examples

if (FALSE) { # \dontrun{
bathy <- fetch_bathymetry(list(xmin = -70, xmax = -66, ymin = 41, ymax = 44))
observations <- attach_bathymetry(observations, bathy, c("DEPTH", "SLOPE"))
} # }