tidy_xyz: Tidy a(n) xyz object masquerading as list

In broom: Convert Statistical Objects into Tidy Tibbles

Tidy a(n) xyz object masquerading as list

Description

Broom tidies a number of lists that are effectively S3 objects without a class attribute. For example, stats::optim(), svd() and interp::interp() produce consistent output, but because they do not have a class attribute, they cannot be handled by S3 dispatch.

These functions look at the elements of a list and determine if there is an appropriate tidying method to apply to the list. Those tidiers are implemented as functions of the form ⁠tidy_<function>⁠ or ⁠glance_<function>⁠ and are not exported (but they are documented!).

If no appropriate tidying method is found, they throw an error.

xyz lists (lists where x and y are vectors of coordinates and z is a matrix of values) are typically used by functions such as graphics::persp() or graphics::image() and returned by interpolation functions such as interp::interp().

Usage

tidy_xyz(x, ...)

Arguments

x

A list with component x, y and z, where x and y are vectors and z is a matrix. The length of x must equal the number of rows in z and the length of y must equal the number of columns in z.

...

Additional arguments. Not used. Needed to match generic signature only. Cautionary note: Misspelled arguments will be absorbed in ..., where they will be ignored. If the misspelled argument has a default value, the default value will be used. For example, if you pass conf.lvel = 0.9, all computation will proceed using conf.level = 0.95. Two exceptions here are: tidy() methods will warn when supplied an exponentiate argument if it will be ignored. augment() methods will warn when supplied a newdata argument if it will be ignored.

Value

A tibble::tibble with vector columns x, y and z.

See Also

tidy(), graphics::persp(), graphics::image(), interp::interp()

Other list tidiers: glance_optim(), list_tidiers, tidy_irlba(), tidy_optim(), tidy_svd()

Examples

A <- list(x = 1:5, y = 1:3, z = matrix(runif(5 * 3), nrow = 5))
image(A)
tidy(A)

broom documentation built on Sept. 13, 2025, 9:09 a.m.