oce (version 0.8-3)

topoInterpolate: Interpolate within a topography dataset

Description

Interpolate within a topography dataset

Usage

topoInterpolate(latitude, longitude, topo)

Arguments

latitude

latitude, or vector of latitudes (in the same sign convention as used in topo).

longitude

longitude, or vector of longitudes (in the same sign convention as used in topo).

topo

topography object, as e.g. loaded with data(topoWorld).

Value

• A height (or vector of heights) giving the elevation of the earth above means sea level at the indicated location on the earth.

Details

Bilinear interpolation is used so that values will vary smoothly within a latitude-longitude grid cell. Note that the sign convention for latitude and longitude must match that in topo.

See Also

A topo object may be read with read.topo.

Examples

library(oce)
data(topoWorld)
data(topoMaritimes)
# "The Gully", approx. 400m deep, connects Gulf of St Lawrence with North Atlantic
topoInterpolate(45, 360 - 57, topoWorld)
topoInterpolate(45, -57, topoMaritimes)