Coerce Data Into a topo Object
as.topo(longitude, latitude, z, filename = "")
Either a vector of longitudes (in degrees east, and bounded by
-180 and 180), or a
bathy object created by
marmap package; in the second case, all other arguments are ignored.
A vector of latitudes.
A matrix of heights (positive over land).
Name of data (used when called by
A topo object.