fft_slope: Calculate orientation-averaged amplitude

In tsuda16k/pictplot: Image processing functions

Calculate orientation-averaged amplitude

Description

Calculate orientation-averaged amplitude

Usage

fft_slope(
  im,
  range = c(10, 512),
  n = 10,
  mask = TRUE,
  linear.sample = TRUE,
  rawdata = FALSE,
  show.plot = FALSE
)

Arguments

im	an image
range	frequency range
n	number of samples
mask	if TRUE, apply circular mask before calculation
linear.sample	if TRUE,
rawdata	if TRUE, raw data is returned as well as slope value
show.plot	if TRUE, figure is displayed

Value

a numeric value or a data frame

Examples

fft_slope(regatta)
fft_slope(regatta, rawdata = TRUE, show.plot = TRUE)

tsuda16k/pictplot documentation built on March 1, 2023, 8:44 p.m.