coeff_rearrange {Momocs}

Rearrange a matrix of (typically Fourier) coefficients

Description

Momocs uses colnamed matrices to store (typically) Fourier coefficients in Coe objects (typically OutCoe). They are arranged as rank-wise: A1, A2, ..., An, B1, ..., Bn, C1, ..., Cn, D1, ..., Dn. From other softwares they may arrive as A1, B1, C1, D1, ..., An, Bn, Cn, Dn, this functions helps to go from one to the other format. In short, this function rearranges column order. See examples.

Usage

coeff_rearrange(x, by = c("name", "rank")[1])

Arguments

x

matrix (with colnames)

by

character either "name" (A1, A2, ..) or "rank" (A1, B1, ...)

Value

a Momocs object of same class

Examples

m_name <- m_rank <- matrix(1:32, 2, 16)
# this one is ordered by name
colnames(m_name) <- paste0(rep(letters[1:4], each=4), 1:4)
# this one is ordered by rank
colnames(m_rank) <- paste0(letters[1:4], rep(1:4, each=4))

m_rank
m_rank %>% coeff_rearrange(by="name")
m_rank %>% coeff_rearrange(by="rank") #no change

m_name
m_name %>% coeff_rearrange(by="name") # no change
m_name %>% coeff_rearrange(by="rank")