Name elliptic Fourier coefficients

Add standard names to an EFT coefficient vector.

Usage

eft_name(x)

Arguments

x

Numeric vector of EFT coefficients (length must be divisible by 4).

Value

Named numeric vector with names in the format A1, A2, ..., An, B1, B2, ..., Bn, C1, ..., D1, ...

Details

Names are assigned in the order: An (x cosine), Bn (x sine), Cn (y cosine), Dn (y sine), where n is the harmonic number.

Examples

# Create unnamed coefficient vector
coefs <- runif(24)  # 6 harmonics
eft_name(coefs)
#>         A1         A2         A3         A4         A5         A6         B1 
#> 0.10733189 0.07299444 0.35631458 0.57156084 0.67798806 0.69071910 0.37341082 
#>         B2         B3         B4         B5         B6         C1         C2 
#> 0.09797805 0.09900971 0.77480158 0.15149556 0.39460658 0.93499840 0.73958956 
#>         C3         C4         C5         C6         D1         D2         D3 
#> 0.63566812 0.33821985 0.96241630 0.11178991 0.65048527 0.98351155 0.17912750 
#>         D4         D5         D6 
#> 0.13797044 0.05655859 0.54636762