interactive_annotate: interactive annotation

In magickGUI: GUI Tools for Interactive Image Processing with 'magick'

interactive annotation

Description

Using image_annotate of 'magick' interactively. location, degrees, size, weight, and kerning are parameters of image_annotate. See reference manual of 'magick' for detail.

Usage

interactive_annotate(
  image,
  text,
  gravity = "northwest",
  font = "",
  style = "normal",
  decoration = NULL,
  color = NULL,
  strokecolor = NULL,
  boxcolor = NULL,
  range_max_size = 1000,
  range_max_weight = 850,
  range_max_kerning = 300,
  resolution = 0.1,
  return_param = FALSE,
  scale
)

Arguments

image	a magick image object
text	character vector of length equal to 'image' or length 1
gravity	string with gravity value from gravity_types.
font	string with font family such as "sans", "mono", "serif", "Times", "Helvetica", "Trebuchet", "Georgia", "Palatino" or "Comic Sans".
style	value of style_types for example "italic"
decoration	value of decoration_types for example "underline"
color	a valid color string such as "navyblue" or "#000080". Use "none" for transparency.
strokecolor	a color string adds a stroke (border around the text)
boxcolor	a color string for background color that annotation text is rendered on.
range_max_size	define maximum of size in slider. must be positive.
range_max_weight	define maximum of weight in slider. must be positive.
range_max_kerning	define maximum of kerning in slider. must be positive.
resolution	resolution of slider
return_param	If return_param is TRUE, returns a list of values of location, degrees, size, weight, and kerning. If return_param is FALSE, returns a magick image object.
scale	geometry to be passed to image_scale function of magick package. image is scaled just for preview and result image is not scaled if scale is given.

Value

a magick image object or a list of values of location, degrees, size, weight, and kerning

Author(s)

Shota Ochi

Examples

if (interactive())
{
  interactive_annotate(wizard, "hello")
}

magickGUI documentation built on Sept. 11, 2023, 5:06 p.m.