np.plot.controls: Validated plot control helpers

In np: Nonparametric Kernel Smoothing Methods for Mixed Data Types

Validated plot control helpers

Description

Constructors for detailed plot controls used by the redesigned np plotting interface. Common choices such as errors, band, alpha, bootstrap, and B remain direct plot arguments; these helpers collect less common options.

Usage

np_boot_control(nonfixed = c("exact", "frozen"),
                wild = c("rademacher", "mammen"),
                blocklen = NULL)

np_grid_control(xtrim = NULL, xq = NULL, slices = NULL)

np_render_control(style = c("band", "bar"),
                  bar = c("|", "I"),
                  bar_num = NULL)

Arguments

nonfixed	Bootstrap refit behavior for non-fixed bandwidth routes.
wild	Wild-bootstrap multiplier distribution.
blocklen	Optional block length for block bootstrap methods.
xtrim	Optional two-element trim range for evaluation grids.
xq	Optional evaluation quantiles.
slices	Optional slice specification for routes that support it.
style	Interval display style.
bar	Bar style when style = "bar".
bar_num	Optional number of bars.

Details

These helpers validate names and values early. Raw lists are deliberately not accepted as substitutes, so misspelled detailed controls fail before plot computation begins.

New public plot arguments use snake_case. Dotted argument names are reserved for S3 methods and internal plot-engine plumbing. Common rendering controls such as data_overlay, data_rug, layout, and output are supplied directly to plot(...) rather than through np_render_control().

Value

A small classed list consumed by plot methods.

Examples

## Not run: 
plot(fit,
     errors = "bootstrap",
     bootstrap = "inid",
     B = 1999,
     band = "pointwise",
     boot_control = np_boot_control(nonfixed = "exact"))

## End(Not run)

np documentation built on May 16, 2026, 1:07 a.m.