Class to store current meter data, e.g. from an Interocean/S4 device
or an Aanderaa/RCM device. A file
containing Interocean/S4 data may be read with read.cm.
Alternatively, as.cm can be used to create cm objects.
Objects of this class can be
plotted with plot,cm-method or summarized with
summary,cm-method. Data may be retrieved with
[[,cm-method or replaced with \ [[<-,cm-method.
Other things related to cm data: [[,cm-method,
[[<-,cm-method, as.cm,
cm, plot,cm-method,
read.cm, subset,cm-method,
summary,cm-method
Other classes provided by oce: adp-class,
adv-class, argo-class,
bremen-class,
coastline-class, ctd-class,
echosounder-class,
lisst-class, lobo-class,
met-class, oce-class,
odf-class, rsk-class,
sealevel-class,
section-class, topo-class,
windrose-class