StratigrapheR (version 0.0.7)

shift: Circular shift

Description

Circular shift

Usage

shift(x, n = 1L, names = T)

Arguments

x

a vector (characters, numerics, integers,...), data.frame or list

n

a positive integer of length 1, giving the number of positions to shift by (positive values generate lag)

names

whether the names of the elements or rows should also shift

Value

the same object than the input, but with a shifted order

Examples

# NOT RUN {
# Simple use

shift(x = c(6,8,10,12,2,4), n = 2)

# Applications to litholog generation

l <- c(1,2,3)
r <- c(0,1,2)
h  <- c(4,3,4)
i   <- c("B1","B2","B3")

basic.litholog <- litholog(l,r,h,i)

whiteSet(xlim = c(0,4), ylim = c(0,3),
         xaxs = "r", yaxs = "r",   # This gives a little room to the graph
         ytick = 1, ny = 10)

multigons(basic.litholog$i, basic.litholog$xy, basic.litholog$dt,
          forget = "B1", lwd = 2)

openbed <- subset(basic.litholog, basic.litholog == "B1")

openbed <- shift(openbed, -1)

lines(openbed$xy, openbed$dt, lwd = 2)

# }