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. Positions outside the raster's extent
warn with their count and bounding box rather than returning NA in
silence — the behaviour that let a quarter of the released positions read
as "no depth" without a line of output anywhere (D29, 2026-08-31).