sfc_expand_by_rules: Expand a sequence

In sfcurve: 2x2, 3x3 and Nxn Space-Filling Curves

Expand a sequence

Description

Expand a sequence

Usage

## S4 method for signature 'sfc_rules,sfc_nxn'
sfc_expand_by_rules(p, seq, code = 1L, flip = FALSE, by = "Cpp")

## S4 method for signature 'sfc_rules,factor'
sfc_expand_by_rules(p, seq, code = 1L, flip = FALSE, by = "Cpp")

## S4 method for signature 'sfc_rules,character'
sfc_expand_by_rules(p, seq, code = 1L, flip = FALSE, by = "Cpp")

Arguments

p	An 'sfc_rules' object.
seq	An 'sfc_nxn' object or other objects.
code	The expansion code.
flip	For the Peano curve and the Meander curves, each unit can be flipped without affecting other parts in the curve. This argument controls whether to flip the unit. Since currently it only works on the Peano curve and the Meander curve, 'flip' should be a logical vector of length one or with the same length as 'seq'. Whether it flips horizontally, vertically or against the diagonal line is automatically choosen. The value of 'flip' can also be a function which takes the current curve as the only argument.
by	Which implementation? Only for the testing purpose.

Value

If 'seq' is an 'sfc_nxn' object, the function also returns an "expanded" 'sfc_nxn' object. Or else it returns an 'sfc_sequence' object.

Examples

sfc_expand_by_rules(SFC_RULES_2x2, sfc_2x2("I"))

sfcurve documentation built on April 10, 2026, 5:06 p.m.