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Create an axis

Source: R/makeCFObjects.R
makeAxis.Rd

With this method you can create an axis to use with new CFVariable instances. Depending on the orientation argument and the type of the values argument an instance of a class descending from CFAxis will be returned.

Usage

makeAxis(
  name,
  orientation,
  values,
  bounds = NULL,
  attributes = data.frame(),
  group = NULL
)

Arguments

name

Name of the axis.

orientation

The orientation of the axis. Must be one of "X", "Y", "Z", or "T" for longitude, latitude, height or depth, and time axes, respectively. For any other axis, indicate an empty string ""

values

The coordinate values. In the case of an axis with orientation = "T" this must be a CFTime or CFClimatology instance.

bounds

The boundary values of the coordinates, or NULL if not available.

attributes

data.frame with the attributes of the axis to create. Depending on which axis is created one or more attributes may be added or amended.

group

CFGroup instance where the axis will be located. If NULL (default), a private group will be created for the axis.

Value

An instance of a class descending from CFAxis.

Details

There are several restrictions on the combination of orientation and values arguments. Longitude, latitude and depth axes (orientation of "X", "Y" or "Z") must have numeric values. For a time axis (orientation of "T") the values argument must be an instance of CFTime or CFClimatology.

See also

makeLongitudeAxis(), makeLatitudeAxis(), makeTimeAxis(), makeDiscreteAxis()