R: Class to Store Meteorological Data

met-class {oce} | R Documentation

## Class to Store Meteorological Data

### Description

This class stores meteorological data. For objects created with `read.met`, the `data` slot will contain all the columns within the original file (with some guesses as to units) in addition to several calculated quantities such as `u` and `v`, which are velocities in m/s (not the km/h stored in typical data files), and which obey the oceanographic convention that `u>0` is a wind towards the east.

### Slots

`data`

  As with all `oce` objects, the `data` slot for `met` objects is a `list` containing the main data for the object.

`metadata`

  As with all `oce` objects, the `metadata` slot for `met` objects is a `list` containing information about the `data` or about the object itself.

`processingLog`

  As with all `oce` objects, the `processingLog` slot for `met` objects is a `list` with entries describing the creation and evolution of the object. The contents are updated by various `oce` functions to keep a record of processing steps. Object summaries and `processingLogShow` both display the log.

### Modifying slot contents

Although the `[[<-` operator may permit modification of the contents of `met` objects (see `[[<-,met-method`), it is better to use `oceSetData` and `oceSetMetadata`, because that will save an entry in the `processingLog` to describe the change.

### Retrieving slot contents

The full contents of the `data` and `metadata` slots of a `met` object named `met` may be retrieved in the standard R way. For example, `slot(met, "data")` and `slot(met, "metadata")` return the `data` and `metadata` slots, respectively. The `[[,met-method` operator can also be used to access slots, with `met[["data"]]` and `met[["metadata"]]`, respectively. Furthermore, `[[,met-method` can be used to retrieve named items (and potentially some derived items) within the `metadata` and `data` slots, the former taking precedence over the latter in the lookup. It is also possible to find items more directly, using `oceGetData` and `oceGetMetadata`, but this cannot retrieve derived items.

### Author(s)

Dan Kelley

### See Also

Other classes provided by oce: `adp-class`, `adv-class`, `argo-class`, `bremen-class`, `cm-class`, `coastline-class`, `ctd-class`, `lisst-class`, `lobo-class`, `oce-class`, `odf-class`, `rsk-class`, `sealevel-class`, `section-class`, `topo-class`, `windrose-class`

Other things related to met data: `[[,met-method`, `[[<-,met-method`, `as.met`, `download.met`, `met`, `plot,met-method`, `read.met`, `subset,met-method`, `summary,met-method`

[Package oce version 1.1-1 Index]