spiraplot: Create spiraplot images

In cj-holmes/spiraplot: Reproduce Images On Spirals

Description

Create spiraplot images

Usage

spiraplot(
  img,
  image_res = 300,
  ncols = 16,
  spiral_turns = 80,
  spiral_res = 10000,
  spiral_r0 = 0,
  spiral_r1_f = 1,
  thin = 0.05,
  thick = 1.5,
  contrast = 2,
  offset_angle = 0,
  aspect = "landscape",
  col_bg = "white",
  col_line = "black",
  show_image = FALSE
)

Arguments

img	Path of URL of image
image_res	Horizontal resolution for resized image
ncols	Number of shades of grey to quantise image into
spiral_turns	Number of turns in spiral
spiral_res	Number of points on spiral
spiral_r0	Spiral inner radius
spiral_r1_f	Multiplicative scaling factor for spiral outer radius (1 makes spiral to full image width or height)
thin	Size of thinnest lines in spiral
thick	Size of thickest lines in spiral
contrast	A measure of contrast. Higher numbers will give more contrast. A value of 1 will scale the line width linearly from the darkest to the lightest shade of grey (default = 2)
offset_angle	Offset angle of spiral in degrees (default = 0)
aspect	Image aspect "landscape" (default) or "portrait"
col_bg	Background colour
col_line	Spiral line colour
show_image	Show image underneath spiral (default FALSE)

Value

A ggplot2 plot

cj-holmes/spiraplot documentation built on Dec. 19, 2021, 4:59 p.m.