makeAxis: Create an axis

In ncdfCF: Easy Access to NetCDF Files with CF Metadata Conventions

Create an axis

Description

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 = 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.

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.

Value

An instance of a class descending from CFAxis.

See Also

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

ncdfCF documentation built on Sept. 13, 2025, 5:07 p.m.