selectProfiles: Select Profile(s)

In xRing: Identify and Measure Tree Rings on X-Ray Micro-Density Profiles

Select Profile(s)

Description

Uses a line to select a profile (or a region of interest), when selecting a radius the line should start at the pith side and end at the bark side of the sample.

Usage

selectProfiles(im, nPixel = 50, cal = NULL, multiple = TRUE)

Arguments

im	an image
nPixel	the width of the line
cal	calibration
multiple	a single or several profiles

Value

a vector with the average grayvalue along the selected line when a multiple is TRUE and a list when multiple is FALSE

Examples

if (interactive()) {
  # read a sample file
  im <- imRead(file = system.file("img", "AFO1046.1200dpi.png", package = "xRing"))

  # to display the image
  imDisplay(im)

  # select a profile
  profile <- selectProfile(im)

  # to display the profile
  plot(profile, type = "l")
}

xRing documentation built on April 22, 2022, 5:05 p.m.