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.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.
Overview of contents. The show method (e.g. show(met))
displays information about the object.
read.met, and a meteorological object can also be created
with as.met. A sample object is available with
data(met). Statistical summaries are provided by
summary.met, while show displays an overview.
Plotting may be handled with plot.met.