Seafloor depth at points

Bilinear rather than nearest-cell, so a station on a steep slope is not pinned to whichever 15 arc-second cell it happens to land in.

Usage

cc_bathy_depth(lon, lat, bathy = cc_bathy())

Arguments

lon, lat

numeric vectors of equal length, decimal degrees.

bathy

raster from cc_bathy(); pass one explicitly to avoid re-reading it per call.

Value

Numeric vector of depth in metres, NA outside the raster's extent. Land reads 0, never negative.