ladp. Metadata (contained in the S4 slot named metadata) may be retrieved
or set by name, ladp[["longitude"]] <- ladp[["longitude"]] + 1
corrects a one-degree error. Use names(ladp@metadata) to find the
names of the metadata. Column data may be accessed by name, e.g. ladp[["u"]],
ladp[["v"]], ladp[["pressure"]], etc. There may also be
columns for "temperature" and "salinity", and possibly other
things. Use names(ladp@data) to find the names of the data.ladp data: [[,ladp-method,
as.ladp, plot,ladp-method,
summary,ladp-method