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Validate the sequence

Source: R/sfc_validate.R
sfc_validate.Rd

Validate the sequence

Usage

# S4 method for sfc_sequence
sfc_validate(p, by = "sfc_2x2")

# S4 method for character
sfc_validate(p, by = "sfc_2x2")

Arguments

p

An sfc_sequence object or a character string. If it is a character string, rotation of zero is assigned to the first letter.

by

One of sfc_2x2, sfc_3x3_peano and sfc_3x3_meander.

Details

It is mainly used to validate a seed sequence whether they follow the forward-left-right rule.

Examples

try(sfc_validate("LLLLL"))
#> Error : Crossing is not allowed in the sequence.
try(sfc_validate(sfc_sequence("IIIII", rot = c(0, 90, 180, 270, 0), 
        universe = sfc_universe(SFC_RULES_2x2))))
#> Error : Crossing is not allowed in the sequence.