Wrapper function to derive the anisotropy exponent from a non-rotated raster

get_zeta(
  rstr,
  raster_resolution,
  nbin = 20,
  .Hann = TRUE,
  .quantile_prob = c(0.9999),
  .prob = 0.999,
  full = FALSE
)

Arguments

rstr	`Raster` object
raster_resolution	`numeric` the resolution of `rstr` in meters
nbin	`numeric`, the number of bins
.Hann	`logical`, if `TRUE` performs a Hann windowing, default to `TRUE`, passed to `fft2D()`
.quantile_prob	vector of quantile probabilities, default to `c(0.9999)`, passed to `filter_spectral_power_matrix()`
.prob,	`numeric` the value of the probabilities passed to `quantile()`, passed to `filter_alpha()`
full,	`logical` if `TRUE` all results are returned, else, the default, results of interest are returned

a data.frame