Bilinear interpolation is used so that values will vary smoothly within a
longitude-latitude grid cell. Note that the sign convention for
longitude and latitude must match that in topo.
Usage
topoInterpolate(longitude, latitude, topo)
Arguments
longitude
Vector of longitudes (in the same sign convention as used in
topo).
latitude
Vector of latitudes (in the same sign convention as used in
topo).
# NOT RUN {library(oce)
data(topoWorld)
# "The Gully", approx. 400m deep, connects Gulf of St Lawrence with North AtlantictopoInterpolate(45, -57, topoWorld)
# }