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QTS Class

Source: R/qts-class.R
qts.Rd

A collection of functions that implements the QTS class. It currently provides the as_qts() function for QTS coercion of tibble::tibbles and the is_qts() function for checking if an object is a QTS.

Usage

as_qts(x)

is_qts(x)

# S3 method for qts
format(x, digits = 5, ...)

Arguments

x

A tibble::tibble with columns time, w, x, y and z.

digits

An integer value specifying the number of digits to keep for printing. Defaults to 5L.

...

Further arguments passed to or from other methods.

Value

An object of class qts.

Details

A quaternion time series (QTS) is stored as a tibble::tibble with 5 columns:

  • time: A first column specifying the time points at which quaternions were collected;

  • w: A second column specifying the first coordinate of the collected quaternions;

  • x: A third column specifying the second coordinate of the collected quaternions;

  • y: A fourth column specifying the third coordinate of the collected quaternions;

  • z: A fifth column specifying the fourth coordinate of the collected quaternions.

Examples

qts1 <- vespa64$igp[[1]]
qts2 <- as_qts(qts1)
is_qts(qts1)
#> [1] TRUE
is_qts(qts2)
#> [1] TRUE