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Split DCT coefficient vector into components

Source: R/morpho-dct.R
dct_split.Rd

Separate a flattened DCT coefficient vector into its An and Bn components.

Usage

dct_split(x)

Arguments

x

Numeric vector of DCT coefficients (length must be even).

Value

List with two elements:

  • an: An coefficients (real parts)

  • bn: Bn coefficients (imaginary parts)

See also

dct() to generate coefficients

Examples

# Create coefficient vector
data(olea)
coefs <- dct(olea$VD[[1]], nb_h = 12)
dct_split(coefs)
#> $an
#>          A1          A2          A3          A4          A5          A6 
#> -3.11820730 -0.13206715 -0.24781390 -0.09660325 -0.06788311 -0.06691169 
#>          A7          A8          A9         A10         A11         A12 
#> -0.03519719 -0.06016120 -0.02071002 -0.06544994 -0.01169704 -0.06810722 
#> 
#> $bn
#>           B1           B2           B3           B4           B5           B6 
#>  0.032926049 -0.914830858  0.005334948 -0.268975696 -0.006644877 -0.101625518 
#>           B7           B8           B9          B10          B11          B12 
#>  0.003834764 -0.049467452  0.003042230 -0.028964333 -0.002260202 -0.022833346 
#>