Calculate fluctuating asymmetry — calc

Calculates fluctuating asymmetry (FA) of landmark templates. FA scores are calculated as Euclidean distance between original and symmetrised templates, corrected for directional asymmetry of sample

calc_fa(data, mirroredlandmarks)

Arguments

data	`facefuns` object or three-dimensional array of dimensions p, k, and n
mirroredlandmarks	Vector specifying order of mirrored landmarks

Value

Returns tibble containing ID and FA scores

Examples

data(LondonSet_aligned)
data(mirroredlandmarks)
calc_fa(LondonSet_aligned, mirroredlandmarks)
#> # A tibble: 102 x 2
#>    id        fa
#>    <chr>  <dbl>
#>  1 001   0.0704
#>  2 002   0.0876
#>  3 003   0.0506
#>  4 004   0.0675
#>  5 005   0.0445
#>  6 006   0.0575
#>  7 007   0.0449
#>  8 008   0.0471
#>  9 009   0.0528
#> 10 010   0.0599
#> # … with 92 more rows