R: Class to Store Meteorological Data

met-class {oce} | R Documentation

## Class to Store Meteorological Data

### Description

Class to store meteorological data, with standard slots `metadata`, `data` and `processingLog`. 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.

### Methods

Accessing values. For an object named `m`, temperature (in degC) may be accessed as `m[["temperature"]]`, dew point (in degC) as `m[["dewPoint"]]`, pressure (in kPa) as `m[["pressure"]]`, eastward wind component (in m/s) as `m[["u"]]`, northward wind component (in m/s) as `m[["v"]]`. Caution: the other elements stored in the dataset are mainly in the format of the source file, and thus their use requires some extra knowledge; for example, `m[["direction"]]` yields the wind direction, measured in 10-degree units positive clockwise from North. The filename from which the data came (if any) may be found with `m[["filename"]]`. Items in `metadata` must be specifield by full name, but those in `data` may be abbreviated, so long as the abbreviation is unique.

Assigning values. Everything that may be accessed may also be assigned, e.g.

    m[["temperature"]] <- 1 + m[["temperature"]]

increases temperature by 1C.

### 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`, `echosounder-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`, `met`, `plot,met-method`, `read.met`, `subset,met-method`, `summary,met-method`

[Package oce version 0.9-20 Index]