This function is somewhat analogous to `subset.data.frame()`

.

# S4 method for cm subset(x, subset, ...)

x | a cm object. |
---|---|

subset | a condition to be applied to the |

... | ignored. |

A new `cm`

object.

Other things related to cm data:
`[[,cm-method`

,
`[[<-,cm-method`

,
`as.cm()`

,
`cm-class`

,
`cm`

,
`plot,cm-method`

,
`read.cm()`

,
`rotateAboutZ()`

,
`summary,cm-method`

Other functions that subset oce objects:
`subset,adp-method`

,
`subset,adv-method`

,
`subset,amsr-method`

,
`subset,argo-method`

,
`subset,coastline-method`

,
`subset,ctd-method`

,
`subset,echosounder-method`

,
`subset,lobo-method`

,
`subset,met-method`

,
`subset,oce-method`

,
`subset,odf-method`

,
`subset,rsk-method`

,
`subset,sealevel-method`

,
`subset,section-method`

,
`subset,topo-method`

,
`subset,xbt-method`